Code
P1361
ACURA
P — Powertrain
TDC Sensor Intermittent Interruption
Views:
UK: 16
EN: 32
RU: 29
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
BMW
P — Powertrain
Misfire Cylinder 10 With Fuel Cut-off
Views:
UK: 14
EN: 33
RU: 25
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
BUICK
P — Powertrain
IC Circuit Low Voltage
Views:
UK: 14
EN: 34
RU: 27
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
CADILLAC
P — Powertrain
IC Circuit Low Voltage
Views:
UK: 19
EN: 38
RU: 31
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
CHEVROLET
P — Powertrain
IC Circuit Low Voltage
Views:
UK: 16
EN: 32
RU: 25
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
CHRYSLER
P — Powertrain
IC Circuit Low Voltage
Views:
UK: 18
EN: 33
RU: 29
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
CITROEN
P — Powertrain
Ignition coil 2 control short circuit to positive
Views:
UK: 4
EN: 3
RU: 3
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
DS
P — Powertrain
Ignition coil 2 control short circuit to positive
Views:
UK: 3
EN: 2
RU: 2
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Your experience will help others
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Code
P1361
FORD
P — Powertrain
Ignition Control (IC) Circuit Low Voltage
Views:
UK: 14
EN: 32
RU: 26
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
GM
P — Powertrain
IC Circuit Low Voltage
Views:
UK: 16
EN: 39
RU: 29
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
GMC
P — Powertrain
IC Circuit Low Voltage
Views:
UK: 21
EN: 33
RU: 27
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
GWM
P — Powertrain
- Ignition Control Circuit Low Voltage (IC)
Views:
UK: 2
EN: 3
RU: 3
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
HONDA
P — Powertrain
TDC Sensor Intermittent Interruption
Views:
UK: 17
EN: 34
RU: 29
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
HUMMER
P — Powertrain
Ignition Coil Control Circuit Low Voltage
Views:
UK: 7
EN: 8
RU: 8
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
INFINITI
P — Powertrain
TDC Sensor Intermittent Interruption
Views:
UK: 12
EN: 30
RU: 24
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
JAGUAR
P — Powertrain
Ignition Coil Cylinder 1 No Activation
Views:
UK: 13
EN: 29
RU: 25
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
LAND ROVER
P — Powertrain
Ignition coil without failure activation cylinder 2
Views:
UK: 4
EN: 5
RU: 6
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Workshop Manuals
Repair manuals for LAND ROVER
3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop Manual199,00 UAH
Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop Manual199,00 UAH
Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop Manual199,00 UAH
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Code
P1361
LINCOLN
P — Powertrain
Ignition Control IC Circuit Low Voltage
Views:
UK: 16
EN: 32
RU: 27
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
MAZDA
P — Powertrain
Ignition Coil B Secondary Circuit
Views:
UK: 16
EN: 31
RU: 26
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
MERCURY
P — Powertrain
Ignition Control IC Circuit Low Voltage
Views:
UK: 12
EN: 31
RU: 26
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
OLDSMOBILE
P — Powertrain
IC Circuit Low Voltage
Views:
UK: 16
EN: 33
RU: 27
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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0
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Code
P1361
Other
P — Powertrain
Ignition Control (IC) Circuit Low Voltage
Views:
UK: 17
EN: 35
RU: 26
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Workshop Manuals
Available brands with manuals
2
AUDI 11
6-speed manual gearbox 0B1, front-wheel drive — Workshop Manual (Edition 05.2014)
Workshop Manual199,00 UAH
Audi A3 (1997) – 1.6L 4-cylinder (2‑valve) Engine Mechanical Components Service Manual (AEH, AKL, APF) – Edition 07.2002
Workshop Manual199,00 UAH
AUDI A3 (2004) Workshop Manual — 2.0L FSI Turbo (4‑cyl, 4‑valve) Engine, Mechanics — Edition 03.2017
Workshop Manual199,00 UAH
Audi A3 2004 — Electrical System (Workshop Manual, Edition 02.2018)
Workshop Manual199,00 UAH
Audi A4 / A4 Cabriolet – 4.2 l V8 (5‑valve, timing chains) – Workshop Manual (Mechanics) – Edition 04.2007
Workshop Manual199,00 UAH
Audi A4 / A4 Cabriolet — Auxiliary Heater Workshop Manual (Edition 08.2004)
Workshop Manual199,00 UAH
Audi A4 / A4 Cabriolet (1.8T 4‑cyl turbo) — Motronic Injection & Ignition System Service Manual (Edition 01.2015)
Workshop Manual199,00 UAH
Audi A8 (2003) — Electrical System Workshop Manual (Edition 08.2014)
Workshop Manual199,00 UAH
Audi Q4 e-tron (Type F4) - Self-study Programme SSP 685
Workshop Manual199,00 UAH
Audi Q8 (2018) — Electrical System Workshop Manual (Edition 05.2019)
Workshop Manual199,00 UAH
Audi Servicing Manual — 7‑Speed Dual Clutch Transmission 0CJ / 0CL / 0CK / 0DN / 0DP / 0HL (Edition 05.2018)
Workshop Manual199,00 UAH
LAND ROVER 3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop Manual199,00 UAH
Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop Manual199,00 UAH
Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop Manual199,00 UAH
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Code
P1361
PEUGEOT
P — Powertrain
Ignition coil 2 control short circuit to positive
Views:
UK: 3
EN: 5
RU: 2
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
SATURN
P — Powertrain
IC Circuit Low Voltage
Views:
UK: 14
EN: 88
RU: 26
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P1361
VOLKSWAGEN
P — Powertrain
Cylinder 3 Ignition Circuit Open
Views:
UK: 13
EN: 31
RU: 29
AI status
Completed
Completed
100%
Causes
- Loose, corroded, or damaged TDC sensor connector
- Broken, chafed, or shorted wiring harness between sensor and PCM
- Faulty TDC/position sensor (Hall-effect or inductive)
- Damaged or missing reluctor/trigger wheel teeth or magnetic ring
- Intermittent PCM/input circuit fault or poor ground
- Poor battery voltage or charging system issues causing signal dropout
Symptoms
- Check Engine Light (MIL) set — intermittent
- Intermittent hard starting or no-start condition
- Engine misfire, hesitation, rough idle or surging
- Intermittent stalling or loss of power
- Poor fuel economy or driveability problems under certain conditions
What to check
- Scan for stored and pending codes; record freeze-frame and freeze data
- Visually inspect connector and wiring at the TDC sensor for corrosion, pins pushed out, water intrusion, or damage
- Wiggle test wiring and connector while monitoring live data to try to reproduce the interruption
- Check battery voltage and main engine grounds (low voltage can cause intermittent sensor signals)
- Back-probe sensor connector and verify reference voltage, ground, and signal while cranking
- Use an oscilloscope to observe the sensor waveform across a range of cranking/rpm speeds
Signal parameters
- Hall-effect type: typical square-wave signal 0–5 V (inactive ~0 V, active ~4–5 V); switching synchronized to engine rotation. Reference and ground present at sensor.
- Inductive type: AC sine/pulse waveform with amplitude rising with rpm; no DC supply required. Expect measurable AC voltage when cranking.
- At cranking, a consistent, repeatable waveform should be present; intermittent dropouts or noisy signals indicate fault.
- Consult vehicle service manual for exact reference voltages, resistance values, and waveform specs for the specific Acura model/year.
Diagnostic algorithm
- Retrieve freeze-frame, live data and note operating conditions when code set.
- Perform a thorough visual inspection of sensor, connector, harness routing and engine grounds.
- Clean and reseat connector; repair any corroded or damaged terminals.
- Back-probe sensor pins: verify reference voltage (if used), ground continuity and signal presence while cranking. Note any intermittent loss.
- Use a lab scope to confirm waveform integrity across rpm. Wiggle wiring/connectors to try to reproduce dropouts.
- If wiring shows intermittent short/open, repair or replace harness sections and retest.
- If wiring and power/ground are good but signal is intermittent or missing, replace the TDC sensor and recheck.
- Inspect reluctor/trigger wheel for damage; repair or replace as needed.
- If problem persists after sensor and wiring repairs, check PCM input circuits and grounds; consult manufacturer procedures before replacing PCM.
- Clear codes and perform a road/test drive to verify repair; rescan for codes.
Likely causes
- Connector corrosion or loose terminal at TDC sensor
- Damaged wiring harness or intermittent short when engine is moving
- Faulty TDC sensor (internal intermittent failure)
- Reluctor/trigger wheel damage or contamination
Fault status
Status
Intermittent interruption detected in the TDC/position sensor circuit. Engine control module observed inconsistent or missing TDC pulses that may affect ignition and fuel timing.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
Your experience will help others
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Was this AI description helpful?
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👍 Like
0
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0
Send to email