Code
P1676
ACURA
P — Powertrain
Traction Control System FI Data Line No Signal
Views:
UK: 17
EN: 24
RU: 30
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring on the TCS/ABS communication/data line
- Corroded, loose or damaged connector at the traction control/ABS module or wiring harness
- Blown fuse or lost power/ground to the TCS/ABS module
- Faulty traction control/ABS module (internal failure)
- CAN/LIN or proprietary network bus fault (failed termination resistor, short, or high impedance)
- Intermittent wiring damage or pinched harness
Symptoms
- Traction control (TCS/ESC/VSA) warning lamp illuminated
- ABS or VSA warning lamp may also be on
- Loss of traction control functionality or limited functionality (no TCS interventions)
- Possible engine warning light or reduced engine performance in some vehicles
- Intermittent electrical faults or faults appearing after movement/wiring flex
What to check
- Read all stored and pending DTCs from ABS/TCS and engine control modules and record freeze frame data
- Verify battery voltage and vehicle charging system are within specification
- Inspect fuses and fusible links related to ABS/TCS and associated power/IGN circuits
- Visually inspect connectors and harnesses at the ABS/TCS module, ECM and DLC for corrosion, bent pins, or damage
- Perform wiggle test of wiring while monitoring live bus/messages with a scan tool
- Measure CAN/CAN-FD/LIN or data-line voltages at the DLC and at the ABS/TCS module connector
Signal parameters
- If on standard CAN: idle (recessive) ~2.5 V on CAN High and CAN Low; dominant states: CANH ≈ 3.5 V, CANL ≈ 1.5 V
- Typical bus differential idle ~0 V, dominant differential ~2 V
- Termination resistance between CANH and CANL ≈ 60 ohms (two 120 Ω terminators in parallel)
- If system uses LIN: idle (dominant high) close to battery voltage via pull-up; data pulses to ground
- If proprietary single-wire data line (manufacturer-specific): expect serial pulses referenced to vehicle ground — consult service manual for exact voltages and protocol
Diagnostic algorithm
- Connect OEM-grade scan tool and read all ABS/TCS and powertrain modules; note all related U-/P- codes and freeze frame data.
- Inspect and verify power and ground circuits to the ABS/TCS module (test for battery voltage at the module’s power terminal with key ON).
- Check relevant fuses and relays; replace any blown items and retest.
- Visually inspect connectors and wiring between ECM, ABS/TCS module and DLC for damage, corrosion, or loose pins; repair as needed.
- With ignition ON (engine off), measure CANH and CANL (or data line) voltages at the data-link connector and at the ABS/TCS module connector. Compare to expected values.
- Measure termination resistance across CANH–CANL with ignition off; if not ~60 Ω, locate missing or shorted terminator.
- Perform a wiggle/stress test on suspect wiring while monitoring communication on a scan tool to reproduce the fault.
- If wiring and power/grounds pass, follow module isolation: disconnect ABS/TCS module and check whether bus communication is restored or other modules report errors.
- If module is suspected faulty after wiring checks, consult service manual for module firmware updates or reprogramming procedures before replacement.
- After repairs, clear codes and road test while monitoring live data to confirm the fault does not return.
Likely causes
- Damaged connector or wiring between ABS/TCS module and ECM
- Blown fuse or poor ground affecting the TCS module
- Loss of CAN/LIN bus communication due to short or failed termination
- Failed traction control/ABS module
Fault status
Status
Traction Control System FI data line not detected/no communication from TCS module to control network.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1676
BUICK
P — Powertrain
Driver 4 Line 6
Views:
UK: 15
EN: 22
RU: 30
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring on the TCS/ABS communication/data line
- Corroded, loose or damaged connector at the traction control/ABS module or wiring harness
- Blown fuse or lost power/ground to the TCS/ABS module
- Faulty traction control/ABS module (internal failure)
- CAN/LIN or proprietary network bus fault (failed termination resistor, short, or high impedance)
- Intermittent wiring damage or pinched harness
Symptoms
- Traction control (TCS/ESC/VSA) warning lamp illuminated
- ABS or VSA warning lamp may also be on
- Loss of traction control functionality or limited functionality (no TCS interventions)
- Possible engine warning light or reduced engine performance in some vehicles
- Intermittent electrical faults or faults appearing after movement/wiring flex
What to check
- Read all stored and pending DTCs from ABS/TCS and engine control modules and record freeze frame data
- Verify battery voltage and vehicle charging system are within specification
- Inspect fuses and fusible links related to ABS/TCS and associated power/IGN circuits
- Visually inspect connectors and harnesses at the ABS/TCS module, ECM and DLC for corrosion, bent pins, or damage
- Perform wiggle test of wiring while monitoring live bus/messages with a scan tool
- Measure CAN/CAN-FD/LIN or data-line voltages at the DLC and at the ABS/TCS module connector
Signal parameters
- If on standard CAN: idle (recessive) ~2.5 V on CAN High and CAN Low; dominant states: CANH ≈ 3.5 V, CANL ≈ 1.5 V
- Typical bus differential idle ~0 V, dominant differential ~2 V
- Termination resistance between CANH and CANL ≈ 60 ohms (two 120 Ω terminators in parallel)
- If system uses LIN: idle (dominant high) close to battery voltage via pull-up; data pulses to ground
- If proprietary single-wire data line (manufacturer-specific): expect serial pulses referenced to vehicle ground — consult service manual for exact voltages and protocol
Diagnostic algorithm
- Connect OEM-grade scan tool and read all ABS/TCS and powertrain modules; note all related U-/P- codes and freeze frame data.
- Inspect and verify power and ground circuits to the ABS/TCS module (test for battery voltage at the module’s power terminal with key ON).
- Check relevant fuses and relays; replace any blown items and retest.
- Visually inspect connectors and wiring between ECM, ABS/TCS module and DLC for damage, corrosion, or loose pins; repair as needed.
- With ignition ON (engine off), measure CANH and CANL (or data line) voltages at the data-link connector and at the ABS/TCS module connector. Compare to expected values.
- Measure termination resistance across CANH–CANL with ignition off; if not ~60 Ω, locate missing or shorted terminator.
- Perform a wiggle/stress test on suspect wiring while monitoring communication on a scan tool to reproduce the fault.
- If wiring and power/grounds pass, follow module isolation: disconnect ABS/TCS module and check whether bus communication is restored or other modules report errors.
- If module is suspected faulty after wiring checks, consult service manual for module firmware updates or reprogramming procedures before replacement.
- After repairs, clear codes and road test while monitoring live data to confirm the fault does not return.
Likely causes
- Damaged connector or wiring between ABS/TCS module and ECM
- Blown fuse or poor ground affecting the TCS module
- Loss of CAN/LIN bus communication due to short or failed termination
- Failed traction control/ABS module
Fault status
Status
Traction Control System FI data line not detected/no communication from TCS module to control network.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1676
CADILLAC
P — Powertrain
Driver 4 Line 6
Views:
UK: 17
EN: 23
RU: 30
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring on the TCS/ABS communication/data line
- Corroded, loose or damaged connector at the traction control/ABS module or wiring harness
- Blown fuse or lost power/ground to the TCS/ABS module
- Faulty traction control/ABS module (internal failure)
- CAN/LIN or proprietary network bus fault (failed termination resistor, short, or high impedance)
- Intermittent wiring damage or pinched harness
Symptoms
- Traction control (TCS/ESC/VSA) warning lamp illuminated
- ABS or VSA warning lamp may also be on
- Loss of traction control functionality or limited functionality (no TCS interventions)
- Possible engine warning light or reduced engine performance in some vehicles
- Intermittent electrical faults or faults appearing after movement/wiring flex
What to check
- Read all stored and pending DTCs from ABS/TCS and engine control modules and record freeze frame data
- Verify battery voltage and vehicle charging system are within specification
- Inspect fuses and fusible links related to ABS/TCS and associated power/IGN circuits
- Visually inspect connectors and harnesses at the ABS/TCS module, ECM and DLC for corrosion, bent pins, or damage
- Perform wiggle test of wiring while monitoring live bus/messages with a scan tool
- Measure CAN/CAN-FD/LIN or data-line voltages at the DLC and at the ABS/TCS module connector
Signal parameters
- If on standard CAN: idle (recessive) ~2.5 V on CAN High and CAN Low; dominant states: CANH ≈ 3.5 V, CANL ≈ 1.5 V
- Typical bus differential idle ~0 V, dominant differential ~2 V
- Termination resistance between CANH and CANL ≈ 60 ohms (two 120 Ω terminators in parallel)
- If system uses LIN: idle (dominant high) close to battery voltage via pull-up; data pulses to ground
- If proprietary single-wire data line (manufacturer-specific): expect serial pulses referenced to vehicle ground — consult service manual for exact voltages and protocol
Diagnostic algorithm
- Connect OEM-grade scan tool and read all ABS/TCS and powertrain modules; note all related U-/P- codes and freeze frame data.
- Inspect and verify power and ground circuits to the ABS/TCS module (test for battery voltage at the module’s power terminal with key ON).
- Check relevant fuses and relays; replace any blown items and retest.
- Visually inspect connectors and wiring between ECM, ABS/TCS module and DLC for damage, corrosion, or loose pins; repair as needed.
- With ignition ON (engine off), measure CANH and CANL (or data line) voltages at the data-link connector and at the ABS/TCS module connector. Compare to expected values.
- Measure termination resistance across CANH–CANL with ignition off; if not ~60 Ω, locate missing or shorted terminator.
- Perform a wiggle/stress test on suspect wiring while monitoring communication on a scan tool to reproduce the fault.
- If wiring and power/grounds pass, follow module isolation: disconnect ABS/TCS module and check whether bus communication is restored or other modules report errors.
- If module is suspected faulty after wiring checks, consult service manual for module firmware updates or reprogramming procedures before replacement.
- After repairs, clear codes and road test while monitoring live data to confirm the fault does not return.
Likely causes
- Damaged connector or wiring between ABS/TCS module and ECM
- Blown fuse or poor ground affecting the TCS module
- Loss of CAN/LIN bus communication due to short or failed termination
- Failed traction control/ABS module
Fault status
Status
Traction Control System FI data line not detected/no communication from TCS module to control network.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1676
CHEVROLET
P — Powertrain
Driver 4 Line 6
Views:
UK: 16
EN: 21
RU: 29
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring on the TCS/ABS communication/data line
- Corroded, loose or damaged connector at the traction control/ABS module or wiring harness
- Blown fuse or lost power/ground to the TCS/ABS module
- Faulty traction control/ABS module (internal failure)
- CAN/LIN or proprietary network bus fault (failed termination resistor, short, or high impedance)
- Intermittent wiring damage or pinched harness
Symptoms
- Traction control (TCS/ESC/VSA) warning lamp illuminated
- ABS or VSA warning lamp may also be on
- Loss of traction control functionality or limited functionality (no TCS interventions)
- Possible engine warning light or reduced engine performance in some vehicles
- Intermittent electrical faults or faults appearing after movement/wiring flex
What to check
- Read all stored and pending DTCs from ABS/TCS and engine control modules and record freeze frame data
- Verify battery voltage and vehicle charging system are within specification
- Inspect fuses and fusible links related to ABS/TCS and associated power/IGN circuits
- Visually inspect connectors and harnesses at the ABS/TCS module, ECM and DLC for corrosion, bent pins, or damage
- Perform wiggle test of wiring while monitoring live bus/messages with a scan tool
- Measure CAN/CAN-FD/LIN or data-line voltages at the DLC and at the ABS/TCS module connector
Signal parameters
- If on standard CAN: idle (recessive) ~2.5 V on CAN High and CAN Low; dominant states: CANH ≈ 3.5 V, CANL ≈ 1.5 V
- Typical bus differential idle ~0 V, dominant differential ~2 V
- Termination resistance between CANH and CANL ≈ 60 ohms (two 120 Ω terminators in parallel)
- If system uses LIN: idle (dominant high) close to battery voltage via pull-up; data pulses to ground
- If proprietary single-wire data line (manufacturer-specific): expect serial pulses referenced to vehicle ground — consult service manual for exact voltages and protocol
Diagnostic algorithm
- Connect OEM-grade scan tool and read all ABS/TCS and powertrain modules; note all related U-/P- codes and freeze frame data.
- Inspect and verify power and ground circuits to the ABS/TCS module (test for battery voltage at the module’s power terminal with key ON).
- Check relevant fuses and relays; replace any blown items and retest.
- Visually inspect connectors and wiring between ECM, ABS/TCS module and DLC for damage, corrosion, or loose pins; repair as needed.
- With ignition ON (engine off), measure CANH and CANL (or data line) voltages at the data-link connector and at the ABS/TCS module connector. Compare to expected values.
- Measure termination resistance across CANH–CANL with ignition off; if not ~60 Ω, locate missing or shorted terminator.
- Perform a wiggle/stress test on suspect wiring while monitoring communication on a scan tool to reproduce the fault.
- If wiring and power/grounds pass, follow module isolation: disconnect ABS/TCS module and check whether bus communication is restored or other modules report errors.
- If module is suspected faulty after wiring checks, consult service manual for module firmware updates or reprogramming procedures before replacement.
- After repairs, clear codes and road test while monitoring live data to confirm the fault does not return.
Likely causes
- Damaged connector or wiring between ABS/TCS module and ECM
- Blown fuse or poor ground affecting the TCS module
- Loss of CAN/LIN bus communication due to short or failed termination
- Failed traction control/ABS module
Fault status
Status
Traction Control System FI data line not detected/no communication from TCS module to control network.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1676
GM
P — Powertrain
Driver 4 Line 6
Views:
UK: 17
EN: 25
RU: 32
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring on the TCS/ABS communication/data line
- Corroded, loose or damaged connector at the traction control/ABS module or wiring harness
- Blown fuse or lost power/ground to the TCS/ABS module
- Faulty traction control/ABS module (internal failure)
- CAN/LIN or proprietary network bus fault (failed termination resistor, short, or high impedance)
- Intermittent wiring damage or pinched harness
Symptoms
- Traction control (TCS/ESC/VSA) warning lamp illuminated
- ABS or VSA warning lamp may also be on
- Loss of traction control functionality or limited functionality (no TCS interventions)
- Possible engine warning light or reduced engine performance in some vehicles
- Intermittent electrical faults or faults appearing after movement/wiring flex
What to check
- Read all stored and pending DTCs from ABS/TCS and engine control modules and record freeze frame data
- Verify battery voltage and vehicle charging system are within specification
- Inspect fuses and fusible links related to ABS/TCS and associated power/IGN circuits
- Visually inspect connectors and harnesses at the ABS/TCS module, ECM and DLC for corrosion, bent pins, or damage
- Perform wiggle test of wiring while monitoring live bus/messages with a scan tool
- Measure CAN/CAN-FD/LIN or data-line voltages at the DLC and at the ABS/TCS module connector
Signal parameters
- If on standard CAN: idle (recessive) ~2.5 V on CAN High and CAN Low; dominant states: CANH ≈ 3.5 V, CANL ≈ 1.5 V
- Typical bus differential idle ~0 V, dominant differential ~2 V
- Termination resistance between CANH and CANL ≈ 60 ohms (two 120 Ω terminators in parallel)
- If system uses LIN: idle (dominant high) close to battery voltage via pull-up; data pulses to ground
- If proprietary single-wire data line (manufacturer-specific): expect serial pulses referenced to vehicle ground — consult service manual for exact voltages and protocol
Diagnostic algorithm
- Connect OEM-grade scan tool and read all ABS/TCS and powertrain modules; note all related U-/P- codes and freeze frame data.
- Inspect and verify power and ground circuits to the ABS/TCS module (test for battery voltage at the module’s power terminal with key ON).
- Check relevant fuses and relays; replace any blown items and retest.
- Visually inspect connectors and wiring between ECM, ABS/TCS module and DLC for damage, corrosion, or loose pins; repair as needed.
- With ignition ON (engine off), measure CANH and CANL (or data line) voltages at the data-link connector and at the ABS/TCS module connector. Compare to expected values.
- Measure termination resistance across CANH–CANL with ignition off; if not ~60 Ω, locate missing or shorted terminator.
- Perform a wiggle/stress test on suspect wiring while monitoring communication on a scan tool to reproduce the fault.
- If wiring and power/grounds pass, follow module isolation: disconnect ABS/TCS module and check whether bus communication is restored or other modules report errors.
- If module is suspected faulty after wiring checks, consult service manual for module firmware updates or reprogramming procedures before replacement.
- After repairs, clear codes and road test while monitoring live data to confirm the fault does not return.
Likely causes
- Damaged connector or wiring between ABS/TCS module and ECM
- Blown fuse or poor ground affecting the TCS module
- Loss of CAN/LIN bus communication due to short or failed termination
- Failed traction control/ABS module
Fault status
Status
Traction Control System FI data line not detected/no communication from TCS module to control network.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1676
GMC
P — Powertrain
Driver 4 Line 6
Views:
UK: 17
EN: 25
RU: 32
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring on the TCS/ABS communication/data line
- Corroded, loose or damaged connector at the traction control/ABS module or wiring harness
- Blown fuse or lost power/ground to the TCS/ABS module
- Faulty traction control/ABS module (internal failure)
- CAN/LIN or proprietary network bus fault (failed termination resistor, short, or high impedance)
- Intermittent wiring damage or pinched harness
Symptoms
- Traction control (TCS/ESC/VSA) warning lamp illuminated
- ABS or VSA warning lamp may also be on
- Loss of traction control functionality or limited functionality (no TCS interventions)
- Possible engine warning light or reduced engine performance in some vehicles
- Intermittent electrical faults or faults appearing after movement/wiring flex
What to check
- Read all stored and pending DTCs from ABS/TCS and engine control modules and record freeze frame data
- Verify battery voltage and vehicle charging system are within specification
- Inspect fuses and fusible links related to ABS/TCS and associated power/IGN circuits
- Visually inspect connectors and harnesses at the ABS/TCS module, ECM and DLC for corrosion, bent pins, or damage
- Perform wiggle test of wiring while monitoring live bus/messages with a scan tool
- Measure CAN/CAN-FD/LIN or data-line voltages at the DLC and at the ABS/TCS module connector
Signal parameters
- If on standard CAN: idle (recessive) ~2.5 V on CAN High and CAN Low; dominant states: CANH ≈ 3.5 V, CANL ≈ 1.5 V
- Typical bus differential idle ~0 V, dominant differential ~2 V
- Termination resistance between CANH and CANL ≈ 60 ohms (two 120 Ω terminators in parallel)
- If system uses LIN: idle (dominant high) close to battery voltage via pull-up; data pulses to ground
- If proprietary single-wire data line (manufacturer-specific): expect serial pulses referenced to vehicle ground — consult service manual for exact voltages and protocol
Diagnostic algorithm
- Connect OEM-grade scan tool and read all ABS/TCS and powertrain modules; note all related U-/P- codes and freeze frame data.
- Inspect and verify power and ground circuits to the ABS/TCS module (test for battery voltage at the module’s power terminal with key ON).
- Check relevant fuses and relays; replace any blown items and retest.
- Visually inspect connectors and wiring between ECM, ABS/TCS module and DLC for damage, corrosion, or loose pins; repair as needed.
- With ignition ON (engine off), measure CANH and CANL (or data line) voltages at the data-link connector and at the ABS/TCS module connector. Compare to expected values.
- Measure termination resistance across CANH–CANL with ignition off; if not ~60 Ω, locate missing or shorted terminator.
- Perform a wiggle/stress test on suspect wiring while monitoring communication on a scan tool to reproduce the fault.
- If wiring and power/grounds pass, follow module isolation: disconnect ABS/TCS module and check whether bus communication is restored or other modules report errors.
- If module is suspected faulty after wiring checks, consult service manual for module firmware updates or reprogramming procedures before replacement.
- After repairs, clear codes and road test while monitoring live data to confirm the fault does not return.
Likely causes
- Damaged connector or wiring between ABS/TCS module and ECM
- Blown fuse or poor ground affecting the TCS module
- Loss of CAN/LIN bus communication due to short or failed termination
- Failed traction control/ABS module
Fault status
Status
Traction Control System FI data line not detected/no communication from TCS module to control network.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1676
HONDA
P — Powertrain
Traction Control System FI Data Line No Signal
Views:
UK: 17
EN: 22
RU: 32
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring on the TCS/ABS communication/data line
- Corroded, loose or damaged connector at the traction control/ABS module or wiring harness
- Blown fuse or lost power/ground to the TCS/ABS module
- Faulty traction control/ABS module (internal failure)
- CAN/LIN or proprietary network bus fault (failed termination resistor, short, or high impedance)
- Intermittent wiring damage or pinched harness
Symptoms
- Traction control (TCS/ESC/VSA) warning lamp illuminated
- ABS or VSA warning lamp may also be on
- Loss of traction control functionality or limited functionality (no TCS interventions)
- Possible engine warning light or reduced engine performance in some vehicles
- Intermittent electrical faults or faults appearing after movement/wiring flex
What to check
- Read all stored and pending DTCs from ABS/TCS and engine control modules and record freeze frame data
- Verify battery voltage and vehicle charging system are within specification
- Inspect fuses and fusible links related to ABS/TCS and associated power/IGN circuits
- Visually inspect connectors and harnesses at the ABS/TCS module, ECM and DLC for corrosion, bent pins, or damage
- Perform wiggle test of wiring while monitoring live bus/messages with a scan tool
- Measure CAN/CAN-FD/LIN or data-line voltages at the DLC and at the ABS/TCS module connector
Signal parameters
- If on standard CAN: idle (recessive) ~2.5 V on CAN High and CAN Low; dominant states: CANH ≈ 3.5 V, CANL ≈ 1.5 V
- Typical bus differential idle ~0 V, dominant differential ~2 V
- Termination resistance between CANH and CANL ≈ 60 ohms (two 120 Ω terminators in parallel)
- If system uses LIN: idle (dominant high) close to battery voltage via pull-up; data pulses to ground
- If proprietary single-wire data line (manufacturer-specific): expect serial pulses referenced to vehicle ground — consult service manual for exact voltages and protocol
Diagnostic algorithm
- Connect OEM-grade scan tool and read all ABS/TCS and powertrain modules; note all related U-/P- codes and freeze frame data.
- Inspect and verify power and ground circuits to the ABS/TCS module (test for battery voltage at the module’s power terminal with key ON).
- Check relevant fuses and relays; replace any blown items and retest.
- Visually inspect connectors and wiring between ECM, ABS/TCS module and DLC for damage, corrosion, or loose pins; repair as needed.
- With ignition ON (engine off), measure CANH and CANL (or data line) voltages at the data-link connector and at the ABS/TCS module connector. Compare to expected values.
- Measure termination resistance across CANH–CANL with ignition off; if not ~60 Ω, locate missing or shorted terminator.
- Perform a wiggle/stress test on suspect wiring while monitoring communication on a scan tool to reproduce the fault.
- If wiring and power/grounds pass, follow module isolation: disconnect ABS/TCS module and check whether bus communication is restored or other modules report errors.
- If module is suspected faulty after wiring checks, consult service manual for module firmware updates or reprogramming procedures before replacement.
- After repairs, clear codes and road test while monitoring live data to confirm the fault does not return.
Likely causes
- Damaged connector or wiring between ABS/TCS module and ECM
- Blown fuse or poor ground affecting the TCS module
- Loss of CAN/LIN bus communication due to short or failed termination
- Failed traction control/ABS module
Fault status
Status
Traction Control System FI data line not detected/no communication from TCS module to control network.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1676
HUMMER
P — Powertrain
Driver 4 Line 6
Views:
UK: 12
EN: 12
RU: 10
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring on the TCS/ABS communication/data line
- Corroded, loose or damaged connector at the traction control/ABS module or wiring harness
- Blown fuse or lost power/ground to the TCS/ABS module
- Faulty traction control/ABS module (internal failure)
- CAN/LIN or proprietary network bus fault (failed termination resistor, short, or high impedance)
- Intermittent wiring damage or pinched harness
Symptoms
- Traction control (TCS/ESC/VSA) warning lamp illuminated
- ABS or VSA warning lamp may also be on
- Loss of traction control functionality or limited functionality (no TCS interventions)
- Possible engine warning light or reduced engine performance in some vehicles
- Intermittent electrical faults or faults appearing after movement/wiring flex
What to check
- Read all stored and pending DTCs from ABS/TCS and engine control modules and record freeze frame data
- Verify battery voltage and vehicle charging system are within specification
- Inspect fuses and fusible links related to ABS/TCS and associated power/IGN circuits
- Visually inspect connectors and harnesses at the ABS/TCS module, ECM and DLC for corrosion, bent pins, or damage
- Perform wiggle test of wiring while monitoring live bus/messages with a scan tool
- Measure CAN/CAN-FD/LIN or data-line voltages at the DLC and at the ABS/TCS module connector
Signal parameters
- If on standard CAN: idle (recessive) ~2.5 V on CAN High and CAN Low; dominant states: CANH ≈ 3.5 V, CANL ≈ 1.5 V
- Typical bus differential idle ~0 V, dominant differential ~2 V
- Termination resistance between CANH and CANL ≈ 60 ohms (two 120 Ω terminators in parallel)
- If system uses LIN: idle (dominant high) close to battery voltage via pull-up; data pulses to ground
- If proprietary single-wire data line (manufacturer-specific): expect serial pulses referenced to vehicle ground — consult service manual for exact voltages and protocol
Diagnostic algorithm
- Connect OEM-grade scan tool and read all ABS/TCS and powertrain modules; note all related U-/P- codes and freeze frame data.
- Inspect and verify power and ground circuits to the ABS/TCS module (test for battery voltage at the module’s power terminal with key ON).
- Check relevant fuses and relays; replace any blown items and retest.
- Visually inspect connectors and wiring between ECM, ABS/TCS module and DLC for damage, corrosion, or loose pins; repair as needed.
- With ignition ON (engine off), measure CANH and CANL (or data line) voltages at the data-link connector and at the ABS/TCS module connector. Compare to expected values.
- Measure termination resistance across CANH–CANL with ignition off; if not ~60 Ω, locate missing or shorted terminator.
- Perform a wiggle/stress test on suspect wiring while monitoring communication on a scan tool to reproduce the fault.
- If wiring and power/grounds pass, follow module isolation: disconnect ABS/TCS module and check whether bus communication is restored or other modules report errors.
- If module is suspected faulty after wiring checks, consult service manual for module firmware updates or reprogramming procedures before replacement.
- After repairs, clear codes and road test while monitoring live data to confirm the fault does not return.
Likely causes
- Damaged connector or wiring between ABS/TCS module and ECM
- Blown fuse or poor ground affecting the TCS module
- Loss of CAN/LIN bus communication due to short or failed termination
- Failed traction control/ABS module
Fault status
Status
Traction Control System FI data line not detected/no communication from TCS module to control network.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1676
INFINITI
P — Powertrain
Traction Control System FI Data Line No Signal
Views:
UK: 16
EN: 27
RU: 45
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring on the TCS/ABS communication/data line
- Corroded, loose or damaged connector at the traction control/ABS module or wiring harness
- Blown fuse or lost power/ground to the TCS/ABS module
- Faulty traction control/ABS module (internal failure)
- CAN/LIN or proprietary network bus fault (failed termination resistor, short, or high impedance)
- Intermittent wiring damage or pinched harness
Symptoms
- Traction control (TCS/ESC/VSA) warning lamp illuminated
- ABS or VSA warning lamp may also be on
- Loss of traction control functionality or limited functionality (no TCS interventions)
- Possible engine warning light or reduced engine performance in some vehicles
- Intermittent electrical faults or faults appearing after movement/wiring flex
What to check
- Read all stored and pending DTCs from ABS/TCS and engine control modules and record freeze frame data
- Verify battery voltage and vehicle charging system are within specification
- Inspect fuses and fusible links related to ABS/TCS and associated power/IGN circuits
- Visually inspect connectors and harnesses at the ABS/TCS module, ECM and DLC for corrosion, bent pins, or damage
- Perform wiggle test of wiring while monitoring live bus/messages with a scan tool
- Measure CAN/CAN-FD/LIN or data-line voltages at the DLC and at the ABS/TCS module connector
Signal parameters
- If on standard CAN: idle (recessive) ~2.5 V on CAN High and CAN Low; dominant states: CANH ≈ 3.5 V, CANL ≈ 1.5 V
- Typical bus differential idle ~0 V, dominant differential ~2 V
- Termination resistance between CANH and CANL ≈ 60 ohms (two 120 Ω terminators in parallel)
- If system uses LIN: idle (dominant high) close to battery voltage via pull-up; data pulses to ground
- If proprietary single-wire data line (manufacturer-specific): expect serial pulses referenced to vehicle ground — consult service manual for exact voltages and protocol
Diagnostic algorithm
- Connect OEM-grade scan tool and read all ABS/TCS and powertrain modules; note all related U-/P- codes and freeze frame data.
- Inspect and verify power and ground circuits to the ABS/TCS module (test for battery voltage at the module’s power terminal with key ON).
- Check relevant fuses and relays; replace any blown items and retest.
- Visually inspect connectors and wiring between ECM, ABS/TCS module and DLC for damage, corrosion, or loose pins; repair as needed.
- With ignition ON (engine off), measure CANH and CANL (or data line) voltages at the data-link connector and at the ABS/TCS module connector. Compare to expected values.
- Measure termination resistance across CANH–CANL with ignition off; if not ~60 Ω, locate missing or shorted terminator.
- Perform a wiggle/stress test on suspect wiring while monitoring communication on a scan tool to reproduce the fault.
- If wiring and power/grounds pass, follow module isolation: disconnect ABS/TCS module and check whether bus communication is restored or other modules report errors.
- If module is suspected faulty after wiring checks, consult service manual for module firmware updates or reprogramming procedures before replacement.
- After repairs, clear codes and road test while monitoring live data to confirm the fault does not return.
Likely causes
- Damaged connector or wiring between ABS/TCS module and ECM
- Blown fuse or poor ground affecting the TCS module
- Loss of CAN/LIN bus communication due to short or failed termination
- Failed traction control/ABS module
Fault status
Status
Traction Control System FI data line not detected/no communication from TCS module to control network.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1676
LAND ROVER
P — Powertrain
Incompatible injector data
Views:
UK: 5
EN: 8
RU: 7
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring on the TCS/ABS communication/data line
- Corroded, loose or damaged connector at the traction control/ABS module or wiring harness
- Blown fuse or lost power/ground to the TCS/ABS module
- Faulty traction control/ABS module (internal failure)
- CAN/LIN or proprietary network bus fault (failed termination resistor, short, or high impedance)
- Intermittent wiring damage or pinched harness
Symptoms
- Traction control (TCS/ESC/VSA) warning lamp illuminated
- ABS or VSA warning lamp may also be on
- Loss of traction control functionality or limited functionality (no TCS interventions)
- Possible engine warning light or reduced engine performance in some vehicles
- Intermittent electrical faults or faults appearing after movement/wiring flex
What to check
- Read all stored and pending DTCs from ABS/TCS and engine control modules and record freeze frame data
- Verify battery voltage and vehicle charging system are within specification
- Inspect fuses and fusible links related to ABS/TCS and associated power/IGN circuits
- Visually inspect connectors and harnesses at the ABS/TCS module, ECM and DLC for corrosion, bent pins, or damage
- Perform wiggle test of wiring while monitoring live bus/messages with a scan tool
- Measure CAN/CAN-FD/LIN or data-line voltages at the DLC and at the ABS/TCS module connector
Signal parameters
- If on standard CAN: idle (recessive) ~2.5 V on CAN High and CAN Low; dominant states: CANH ≈ 3.5 V, CANL ≈ 1.5 V
- Typical bus differential idle ~0 V, dominant differential ~2 V
- Termination resistance between CANH and CANL ≈ 60 ohms (two 120 Ω terminators in parallel)
- If system uses LIN: idle (dominant high) close to battery voltage via pull-up; data pulses to ground
- If proprietary single-wire data line (manufacturer-specific): expect serial pulses referenced to vehicle ground — consult service manual for exact voltages and protocol
Diagnostic algorithm
- Connect OEM-grade scan tool and read all ABS/TCS and powertrain modules; note all related U-/P- codes and freeze frame data.
- Inspect and verify power and ground circuits to the ABS/TCS module (test for battery voltage at the module’s power terminal with key ON).
- Check relevant fuses and relays; replace any blown items and retest.
- Visually inspect connectors and wiring between ECM, ABS/TCS module and DLC for damage, corrosion, or loose pins; repair as needed.
- With ignition ON (engine off), measure CANH and CANL (or data line) voltages at the data-link connector and at the ABS/TCS module connector. Compare to expected values.
- Measure termination resistance across CANH–CANL with ignition off; if not ~60 Ω, locate missing or shorted terminator.
- Perform a wiggle/stress test on suspect wiring while monitoring communication on a scan tool to reproduce the fault.
- If wiring and power/grounds pass, follow module isolation: disconnect ABS/TCS module and check whether bus communication is restored or other modules report errors.
- If module is suspected faulty after wiring checks, consult service manual for module firmware updates or reprogramming procedures before replacement.
- After repairs, clear codes and road test while monitoring live data to confirm the fault does not return.
Likely causes
- Damaged connector or wiring between ABS/TCS module and ECM
- Blown fuse or poor ground affecting the TCS module
- Loss of CAN/LIN bus communication due to short or failed termination
- Failed traction control/ABS module
Fault status
Status
Traction Control System FI data line not detected/no communication from TCS module to control network.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
Similar codes
Workshop Manuals
Repair manuals for LAND ROVER
3
Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop ManualLand Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
Workshop ManualLand Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop ManualYour experience will help others
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Code
P1676
OLDSMOBILE
P — Powertrain
Driver 4 Line 6
Views:
UK: 19
EN: 30
RU: 32
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring on the TCS/ABS communication/data line
- Corroded, loose or damaged connector at the traction control/ABS module or wiring harness
- Blown fuse or lost power/ground to the TCS/ABS module
- Faulty traction control/ABS module (internal failure)
- CAN/LIN or proprietary network bus fault (failed termination resistor, short, or high impedance)
- Intermittent wiring damage or pinched harness
Symptoms
- Traction control (TCS/ESC/VSA) warning lamp illuminated
- ABS or VSA warning lamp may also be on
- Loss of traction control functionality or limited functionality (no TCS interventions)
- Possible engine warning light or reduced engine performance in some vehicles
- Intermittent electrical faults or faults appearing after movement/wiring flex
What to check
- Read all stored and pending DTCs from ABS/TCS and engine control modules and record freeze frame data
- Verify battery voltage and vehicle charging system are within specification
- Inspect fuses and fusible links related to ABS/TCS and associated power/IGN circuits
- Visually inspect connectors and harnesses at the ABS/TCS module, ECM and DLC for corrosion, bent pins, or damage
- Perform wiggle test of wiring while monitoring live bus/messages with a scan tool
- Measure CAN/CAN-FD/LIN or data-line voltages at the DLC and at the ABS/TCS module connector
Signal parameters
- If on standard CAN: idle (recessive) ~2.5 V on CAN High and CAN Low; dominant states: CANH ≈ 3.5 V, CANL ≈ 1.5 V
- Typical bus differential idle ~0 V, dominant differential ~2 V
- Termination resistance between CANH and CANL ≈ 60 ohms (two 120 Ω terminators in parallel)
- If system uses LIN: idle (dominant high) close to battery voltage via pull-up; data pulses to ground
- If proprietary single-wire data line (manufacturer-specific): expect serial pulses referenced to vehicle ground — consult service manual for exact voltages and protocol
Diagnostic algorithm
- Connect OEM-grade scan tool and read all ABS/TCS and powertrain modules; note all related U-/P- codes and freeze frame data.
- Inspect and verify power and ground circuits to the ABS/TCS module (test for battery voltage at the module’s power terminal with key ON).
- Check relevant fuses and relays; replace any blown items and retest.
- Visually inspect connectors and wiring between ECM, ABS/TCS module and DLC for damage, corrosion, or loose pins; repair as needed.
- With ignition ON (engine off), measure CANH and CANL (or data line) voltages at the data-link connector and at the ABS/TCS module connector. Compare to expected values.
- Measure termination resistance across CANH–CANL with ignition off; if not ~60 Ω, locate missing or shorted terminator.
- Perform a wiggle/stress test on suspect wiring while monitoring communication on a scan tool to reproduce the fault.
- If wiring and power/grounds pass, follow module isolation: disconnect ABS/TCS module and check whether bus communication is restored or other modules report errors.
- If module is suspected faulty after wiring checks, consult service manual for module firmware updates or reprogramming procedures before replacement.
- After repairs, clear codes and road test while monitoring live data to confirm the fault does not return.
Likely causes
- Damaged connector or wiring between ABS/TCS module and ECM
- Blown fuse or poor ground affecting the TCS module
- Loss of CAN/LIN bus communication due to short or failed termination
- Failed traction control/ABS module
Fault status
Status
Traction Control System FI data line not detected/no communication from TCS module to control network.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1676
SAAB
P — Powertrain
Injector Circuit Open / Short To Ground Or B+
Views:
UK: 3
EN: 3
RU: 6
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring on the TCS/ABS communication/data line
- Corroded, loose or damaged connector at the traction control/ABS module or wiring harness
- Blown fuse or lost power/ground to the TCS/ABS module
- Faulty traction control/ABS module (internal failure)
- CAN/LIN or proprietary network bus fault (failed termination resistor, short, or high impedance)
- Intermittent wiring damage or pinched harness
Symptoms
- Traction control (TCS/ESC/VSA) warning lamp illuminated
- ABS or VSA warning lamp may also be on
- Loss of traction control functionality or limited functionality (no TCS interventions)
- Possible engine warning light or reduced engine performance in some vehicles
- Intermittent electrical faults or faults appearing after movement/wiring flex
What to check
- Read all stored and pending DTCs from ABS/TCS and engine control modules and record freeze frame data
- Verify battery voltage and vehicle charging system are within specification
- Inspect fuses and fusible links related to ABS/TCS and associated power/IGN circuits
- Visually inspect connectors and harnesses at the ABS/TCS module, ECM and DLC for corrosion, bent pins, or damage
- Perform wiggle test of wiring while monitoring live bus/messages with a scan tool
- Measure CAN/CAN-FD/LIN or data-line voltages at the DLC and at the ABS/TCS module connector
Signal parameters
- If on standard CAN: idle (recessive) ~2.5 V on CAN High and CAN Low; dominant states: CANH ≈ 3.5 V, CANL ≈ 1.5 V
- Typical bus differential idle ~0 V, dominant differential ~2 V
- Termination resistance between CANH and CANL ≈ 60 ohms (two 120 Ω terminators in parallel)
- If system uses LIN: idle (dominant high) close to battery voltage via pull-up; data pulses to ground
- If proprietary single-wire data line (manufacturer-specific): expect serial pulses referenced to vehicle ground — consult service manual for exact voltages and protocol
Diagnostic algorithm
- Connect OEM-grade scan tool and read all ABS/TCS and powertrain modules; note all related U-/P- codes and freeze frame data.
- Inspect and verify power and ground circuits to the ABS/TCS module (test for battery voltage at the module’s power terminal with key ON).
- Check relevant fuses and relays; replace any blown items and retest.
- Visually inspect connectors and wiring between ECM, ABS/TCS module and DLC for damage, corrosion, or loose pins; repair as needed.
- With ignition ON (engine off), measure CANH and CANL (or data line) voltages at the data-link connector and at the ABS/TCS module connector. Compare to expected values.
- Measure termination resistance across CANH–CANL with ignition off; if not ~60 Ω, locate missing or shorted terminator.
- Perform a wiggle/stress test on suspect wiring while monitoring communication on a scan tool to reproduce the fault.
- If wiring and power/grounds pass, follow module isolation: disconnect ABS/TCS module and check whether bus communication is restored or other modules report errors.
- If module is suspected faulty after wiring checks, consult service manual for module firmware updates or reprogramming procedures before replacement.
- After repairs, clear codes and road test while monitoring live data to confirm the fault does not return.
Likely causes
- Damaged connector or wiring between ABS/TCS module and ECM
- Blown fuse or poor ground affecting the TCS module
- Loss of CAN/LIN bus communication due to short or failed termination
- Failed traction control/ABS module
Fault status
Status
Traction Control System FI data line not detected/no communication from TCS module to control network.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
Similar codes
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Code
P1676
SATURN
P — Powertrain
Driver 4 Line 6
Views:
UK: 16
EN: 24
RU: 33
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring on the TCS/ABS communication/data line
- Corroded, loose or damaged connector at the traction control/ABS module or wiring harness
- Blown fuse or lost power/ground to the TCS/ABS module
- Faulty traction control/ABS module (internal failure)
- CAN/LIN or proprietary network bus fault (failed termination resistor, short, or high impedance)
- Intermittent wiring damage or pinched harness
Symptoms
- Traction control (TCS/ESC/VSA) warning lamp illuminated
- ABS or VSA warning lamp may also be on
- Loss of traction control functionality or limited functionality (no TCS interventions)
- Possible engine warning light or reduced engine performance in some vehicles
- Intermittent electrical faults or faults appearing after movement/wiring flex
What to check
- Read all stored and pending DTCs from ABS/TCS and engine control modules and record freeze frame data
- Verify battery voltage and vehicle charging system are within specification
- Inspect fuses and fusible links related to ABS/TCS and associated power/IGN circuits
- Visually inspect connectors and harnesses at the ABS/TCS module, ECM and DLC for corrosion, bent pins, or damage
- Perform wiggle test of wiring while monitoring live bus/messages with a scan tool
- Measure CAN/CAN-FD/LIN or data-line voltages at the DLC and at the ABS/TCS module connector
Signal parameters
- If on standard CAN: idle (recessive) ~2.5 V on CAN High and CAN Low; dominant states: CANH ≈ 3.5 V, CANL ≈ 1.5 V
- Typical bus differential idle ~0 V, dominant differential ~2 V
- Termination resistance between CANH and CANL ≈ 60 ohms (two 120 Ω terminators in parallel)
- If system uses LIN: idle (dominant high) close to battery voltage via pull-up; data pulses to ground
- If proprietary single-wire data line (manufacturer-specific): expect serial pulses referenced to vehicle ground — consult service manual for exact voltages and protocol
Diagnostic algorithm
- Connect OEM-grade scan tool and read all ABS/TCS and powertrain modules; note all related U-/P- codes and freeze frame data.
- Inspect and verify power and ground circuits to the ABS/TCS module (test for battery voltage at the module’s power terminal with key ON).
- Check relevant fuses and relays; replace any blown items and retest.
- Visually inspect connectors and wiring between ECM, ABS/TCS module and DLC for damage, corrosion, or loose pins; repair as needed.
- With ignition ON (engine off), measure CANH and CANL (or data line) voltages at the data-link connector and at the ABS/TCS module connector. Compare to expected values.
- Measure termination resistance across CANH–CANL with ignition off; if not ~60 Ω, locate missing or shorted terminator.
- Perform a wiggle/stress test on suspect wiring while monitoring communication on a scan tool to reproduce the fault.
- If wiring and power/grounds pass, follow module isolation: disconnect ABS/TCS module and check whether bus communication is restored or other modules report errors.
- If module is suspected faulty after wiring checks, consult service manual for module firmware updates or reprogramming procedures before replacement.
- After repairs, clear codes and road test while monitoring live data to confirm the fault does not return.
Likely causes
- Damaged connector or wiring between ABS/TCS module and ECM
- Blown fuse or poor ground affecting the TCS module
- Loss of CAN/LIN bus communication due to short or failed termination
- Failed traction control/ABS module
Fault status
Status
Traction Control System FI data line not detected/no communication from TCS module to control network.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
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Code
P1676
VOLKSWAGEN
P — Powertrain
Drive By Wire MIL Circuit Electrical Malfunction
Views:
UK: 17
EN: 22
RU: 34
AI status
Completed
Completed
100%
Causes
- Open or shorted wiring on the TCS/ABS communication/data line
- Corroded, loose or damaged connector at the traction control/ABS module or wiring harness
- Blown fuse or lost power/ground to the TCS/ABS module
- Faulty traction control/ABS module (internal failure)
- CAN/LIN or proprietary network bus fault (failed termination resistor, short, or high impedance)
- Intermittent wiring damage or pinched harness
Symptoms
- Traction control (TCS/ESC/VSA) warning lamp illuminated
- ABS or VSA warning lamp may also be on
- Loss of traction control functionality or limited functionality (no TCS interventions)
- Possible engine warning light or reduced engine performance in some vehicles
- Intermittent electrical faults or faults appearing after movement/wiring flex
What to check
- Read all stored and pending DTCs from ABS/TCS and engine control modules and record freeze frame data
- Verify battery voltage and vehicle charging system are within specification
- Inspect fuses and fusible links related to ABS/TCS and associated power/IGN circuits
- Visually inspect connectors and harnesses at the ABS/TCS module, ECM and DLC for corrosion, bent pins, or damage
- Perform wiggle test of wiring while monitoring live bus/messages with a scan tool
- Measure CAN/CAN-FD/LIN or data-line voltages at the DLC and at the ABS/TCS module connector
Signal parameters
- If on standard CAN: idle (recessive) ~2.5 V on CAN High and CAN Low; dominant states: CANH ≈ 3.5 V, CANL ≈ 1.5 V
- Typical bus differential idle ~0 V, dominant differential ~2 V
- Termination resistance between CANH and CANL ≈ 60 ohms (two 120 Ω terminators in parallel)
- If system uses LIN: idle (dominant high) close to battery voltage via pull-up; data pulses to ground
- If proprietary single-wire data line (manufacturer-specific): expect serial pulses referenced to vehicle ground — consult service manual for exact voltages and protocol
Diagnostic algorithm
- Connect OEM-grade scan tool and read all ABS/TCS and powertrain modules; note all related U-/P- codes and freeze frame data.
- Inspect and verify power and ground circuits to the ABS/TCS module (test for battery voltage at the module’s power terminal with key ON).
- Check relevant fuses and relays; replace any blown items and retest.
- Visually inspect connectors and wiring between ECM, ABS/TCS module and DLC for damage, corrosion, or loose pins; repair as needed.
- With ignition ON (engine off), measure CANH and CANL (or data line) voltages at the data-link connector and at the ABS/TCS module connector. Compare to expected values.
- Measure termination resistance across CANH–CANL with ignition off; if not ~60 Ω, locate missing or shorted terminator.
- Perform a wiggle/stress test on suspect wiring while monitoring communication on a scan tool to reproduce the fault.
- If wiring and power/grounds pass, follow module isolation: disconnect ABS/TCS module and check whether bus communication is restored or other modules report errors.
- If module is suspected faulty after wiring checks, consult service manual for module firmware updates or reprogramming procedures before replacement.
- After repairs, clear codes and road test while monitoring live data to confirm the fault does not return.
Likely causes
- Damaged connector or wiring between ABS/TCS module and ECM
- Blown fuse or poor ground affecting the TCS module
- Loss of CAN/LIN bus communication due to short or failed termination
- Failed traction control/ABS module
Fault status
Status
Traction Control System FI data line not detected/no communication from TCS module to control network.
Repair difficulty: Medium
Diagnostic time: 1.5-3.0 hours
Similar codes
Your experience will help others
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Was this AI description helpful?
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👍 Like
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