Code
C1216
HYUNDAI
C — Chassis
Pulse Generator(PG)-B Sensor
Views:
UK: 14
EN: 25
RU: 24
AI status
Completed
Completed
100%
Causes
- Damaged or failed PG‑B sensor (Hall or inductive)
- Broken, corroded, or loose connector at the sensor
- Damaged wiring (open, short to ground, short to power, high resistance)
- Contaminated or physically damaged reluctor/target (missing or deformed teeth)
- Misalignment or improper air gap between sensor and reluctor
- Intermittent connector contact from corrosion or water intrusion
Symptoms
- ABS, ESC/traction control or related warning lamp illuminated
- Loss of ABS/traction control functions or reduced braking stability features
- Erratic or absent speed-related readings if used by other modules (TCM/ABS)
- Shift irregularities if signal shared with transmission control (depends on vehicle)
- Diagnostic trouble codes stored for PG‑B and possibly related sensors
What to check
- Retrieve freeze‑frame and all stored codes; note related codes and current status
- Visually inspect sensor, connector and wiring for damage, corrosion, contamination or loose mounting
- Check for water/grease/metal debris on sensor or reluctor ring
- Wiggle wiring harness while monitoring code/voltage to reproduce intermittent faults
- Measure sensor connector for reference power, ground and signal with key on (see signal_params)
- Measure sensor resistance (if inductive) and compare to spec; check for short to ground/power
Signal parameters
- Signal type: digital pulse train (Hall) or AC sine pulses (inductive magneto), depending on sensor design
- Voltage amplitude (Hall-type): typically ~0.5–5 V square wave above reference ground; may vary by model
- Inductive output: AC voltage that increases with speed; zero at rest
- Frequency: proportional to rotational speed — ramps up smoothly as shaft/wheel speed increases
- Resistance (inductive): moderate ohms; short or infinite resistance indicates failure (spec varies by model)
- Common fault signatures: no pulses, constant voltage, intermittent pulses, noisy/irregular waveform
Diagnostic algorithm
- Verify the code and record related DTCs and freeze frame data. Do not replace parts without testing.
- Perform a careful visual inspection of PG‑B sensor, connector, wiring harness and reluctor ring for obvious damage, contamination or misalignment.
- With connector unplugged, check sensor resistance (if specified by service manual) and compare to spec. Replace if out of range or open/short.
- With connector connected, backprobe the signal wire and monitor with a multimeter or oscilloscope while rotating the component (wheel/shaft). Look for a clean pulse waveform and increasing frequency with speed.
- Check reference power and ground to the sensor (if applicable). Repair any missing reference circuits.
- If signal is missing or noisy at the sensor but good at the module (or vice versa), isolate and repair wiring between sensor and module; check for shorts to power/ground.
- Inspect and repair/replace damaged reluctor/target ring or correct sensor air gap if geometry is wrong.
- If intermittent, perform wiggle tests on harness/connectors while monitoring signal to locate breaks.
- After repairs, clear codes and perform road or bench test to confirm proper function and that the code does not return.
- If all wiring and sensor checks are good and the fault persists, consider module input circuit testing or professional module diagnosis.
Likely causes
- Sensor failed from internal fault (open/short)
- Connector pins corroded or bent causing intermittent contact
- Wiring chafed and shorting when suspension/shaft moves
- Reluctor ring damaged or missing teeth causing no/erratic pulses
- Incorrect sensor installation or excessive sensor gap
Fault status
Status
PG‑B sensor circuit malfunction — control module detects missing, erratic, or out‑of‑range pulse signal from the PG‑B sensor. May disable related ABS/traction/transmission functions until repaired.
Repair difficulty: Medium
Diagnostic time: 0.5 - 2.0 hours
Similar codes
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Code
C1216
MITSUBISHI
C — Chassis
RL wheel speed sensor signal
Views:
UK: 7
EN: 14
RU: 15
AI status
Completed
Completed
100%
Causes
- Damaged or failed PG‑B sensor (Hall or inductive)
- Broken, corroded, or loose connector at the sensor
- Damaged wiring (open, short to ground, short to power, high resistance)
- Contaminated or physically damaged reluctor/target (missing or deformed teeth)
- Misalignment or improper air gap between sensor and reluctor
- Intermittent connector contact from corrosion or water intrusion
Symptoms
- ABS, ESC/traction control or related warning lamp illuminated
- Loss of ABS/traction control functions or reduced braking stability features
- Erratic or absent speed-related readings if used by other modules (TCM/ABS)
- Shift irregularities if signal shared with transmission control (depends on vehicle)
- Diagnostic trouble codes stored for PG‑B and possibly related sensors
What to check
- Retrieve freeze‑frame and all stored codes; note related codes and current status
- Visually inspect sensor, connector and wiring for damage, corrosion, contamination or loose mounting
- Check for water/grease/metal debris on sensor or reluctor ring
- Wiggle wiring harness while monitoring code/voltage to reproduce intermittent faults
- Measure sensor connector for reference power, ground and signal with key on (see signal_params)
- Measure sensor resistance (if inductive) and compare to spec; check for short to ground/power
Signal parameters
- Signal type: digital pulse train (Hall) or AC sine pulses (inductive magneto), depending on sensor design
- Voltage amplitude (Hall-type): typically ~0.5–5 V square wave above reference ground; may vary by model
- Inductive output: AC voltage that increases with speed; zero at rest
- Frequency: proportional to rotational speed — ramps up smoothly as shaft/wheel speed increases
- Resistance (inductive): moderate ohms; short or infinite resistance indicates failure (spec varies by model)
- Common fault signatures: no pulses, constant voltage, intermittent pulses, noisy/irregular waveform
Diagnostic algorithm
- Verify the code and record related DTCs and freeze frame data. Do not replace parts without testing.
- Perform a careful visual inspection of PG‑B sensor, connector, wiring harness and reluctor ring for obvious damage, contamination or misalignment.
- With connector unplugged, check sensor resistance (if specified by service manual) and compare to spec. Replace if out of range or open/short.
- With connector connected, backprobe the signal wire and monitor with a multimeter or oscilloscope while rotating the component (wheel/shaft). Look for a clean pulse waveform and increasing frequency with speed.
- Check reference power and ground to the sensor (if applicable). Repair any missing reference circuits.
- If signal is missing or noisy at the sensor but good at the module (or vice versa), isolate and repair wiring between sensor and module; check for shorts to power/ground.
- Inspect and repair/replace damaged reluctor/target ring or correct sensor air gap if geometry is wrong.
- If intermittent, perform wiggle tests on harness/connectors while monitoring signal to locate breaks.
- After repairs, clear codes and perform road or bench test to confirm proper function and that the code does not return.
- If all wiring and sensor checks are good and the fault persists, consider module input circuit testing or professional module diagnosis.
Likely causes
- Sensor failed from internal fault (open/short)
- Connector pins corroded or bent causing intermittent contact
- Wiring chafed and shorting when suspension/shaft moves
- Reluctor ring damaged or missing teeth causing no/erratic pulses
- Incorrect sensor installation or excessive sensor gap
Fault status
Status
PG‑B sensor circuit malfunction — control module detects missing, erratic, or out‑of‑range pulse signal from the PG‑B sensor. May disable related ABS/traction/transmission functions until repaired.
Repair difficulty: Medium
Diagnostic time: 0.5 - 2.0 hours
Similar codes
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Code
C1216
Other
C — Chassis
ABS Inlet Valve Coil RF Circuit Short To Battery
Views:
UK: 20
EN: 52
RU: 37
AI status
Completed
Completed
100%
Causes
- Damaged or failed PG‑B sensor (Hall or inductive)
- Broken, corroded, or loose connector at the sensor
- Damaged wiring (open, short to ground, short to power, high resistance)
- Contaminated or physically damaged reluctor/target (missing or deformed teeth)
- Misalignment or improper air gap between sensor and reluctor
- Intermittent connector contact from corrosion or water intrusion
Symptoms
- ABS, ESC/traction control or related warning lamp illuminated
- Loss of ABS/traction control functions or reduced braking stability features
- Erratic or absent speed-related readings if used by other modules (TCM/ABS)
- Shift irregularities if signal shared with transmission control (depends on vehicle)
- Diagnostic trouble codes stored for PG‑B and possibly related sensors
What to check
- Retrieve freeze‑frame and all stored codes; note related codes and current status
- Visually inspect sensor, connector and wiring for damage, corrosion, contamination or loose mounting
- Check for water/grease/metal debris on sensor or reluctor ring
- Wiggle wiring harness while monitoring code/voltage to reproduce intermittent faults
- Measure sensor connector for reference power, ground and signal with key on (see signal_params)
- Measure sensor resistance (if inductive) and compare to spec; check for short to ground/power
Signal parameters
- Signal type: digital pulse train (Hall) or AC sine pulses (inductive magneto), depending on sensor design
- Voltage amplitude (Hall-type): typically ~0.5–5 V square wave above reference ground; may vary by model
- Inductive output: AC voltage that increases with speed; zero at rest
- Frequency: proportional to rotational speed — ramps up smoothly as shaft/wheel speed increases
- Resistance (inductive): moderate ohms; short or infinite resistance indicates failure (spec varies by model)
- Common fault signatures: no pulses, constant voltage, intermittent pulses, noisy/irregular waveform
Diagnostic algorithm
- Verify the code and record related DTCs and freeze frame data. Do not replace parts without testing.
- Perform a careful visual inspection of PG‑B sensor, connector, wiring harness and reluctor ring for obvious damage, contamination or misalignment.
- With connector unplugged, check sensor resistance (if specified by service manual) and compare to spec. Replace if out of range or open/short.
- With connector connected, backprobe the signal wire and monitor with a multimeter or oscilloscope while rotating the component (wheel/shaft). Look for a clean pulse waveform and increasing frequency with speed.
- Check reference power and ground to the sensor (if applicable). Repair any missing reference circuits.
- If signal is missing or noisy at the sensor but good at the module (or vice versa), isolate and repair wiring between sensor and module; check for shorts to power/ground.
- Inspect and repair/replace damaged reluctor/target ring or correct sensor air gap if geometry is wrong.
- If intermittent, perform wiggle tests on harness/connectors while monitoring signal to locate breaks.
- After repairs, clear codes and perform road or bench test to confirm proper function and that the code does not return.
- If all wiring and sensor checks are good and the fault persists, consider module input circuit testing or professional module diagnosis.
Likely causes
- Sensor failed from internal fault (open/short)
- Connector pins corroded or bent causing intermittent contact
- Wiring chafed and shorting when suspension/shaft moves
- Reluctor ring damaged or missing teeth causing no/erratic pulses
- Incorrect sensor installation or excessive sensor gap
Fault status
Status
PG‑B sensor circuit malfunction — control module detects missing, erratic, or out‑of‑range pulse signal from the PG‑B sensor. May disable related ABS/traction/transmission functions until repaired.
Repair difficulty: Medium
Diagnostic time: 0.5 - 2.0 hours
Similar codes
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