Code
C0625
Generic
C — Chassis
Variable Effort Steering Sensor Circuit Range/Performance
Views:
UK: 21
EN: 28
RU: 18
AI status
Completed
Completed
100%
Causes
- Failed or degraded VES (variable effort/torque) sensor
- Open, short or damaged wiring between sensor and control module
- Poor or corroded connector or grounding at sensor or module
- Intermittent connection due to bent pins, water intrusion or movement
- Faulty power/ground reference (blown fuse, poor battery connection)
- Faulty electric power steering (EPS) control module or related ECU
Symptoms
- EPS/Power Steering warning lamp or traction/ABS lamp may illuminate
- Reduced or inconsistent steering assist (heavy or abrupt changes in effort)
- Steering feel changes, uneven or jerky steering response
- Vehicle may enter a reduced-assist or limp steering mode
- Related fault codes or loss of steering-related data on scan tool
What to check
- Scan for stored and pending DTCs; record freeze frame and live data
- Visually inspect sensor, connector, and harness along the steering column for damage or corrosion
- Check fuses and power/ground at the EPS/steering sensor circuit
- Wiggle test harness with engine on to look for intermittent faults while monitoring live sensor data
- Check for related communication codes (U- or C- codes) indicating CAN/ECU issues
- Verify steering column is free to move and not binding
Signal parameters
- Sensor reference: typically 5 V reference or vehicle-specific regulated reference
- Sensor ground: chassis or dedicated ground circuit (should be near 0 V)
- Sensor output: typically variable voltage within 0.5–4.5 V or a CAN data message representing torque/effort
- Signal update rate: commonly 50–200 Hz (real-time torque/effort values)
- Expected continuity: low resistance between sensor ground and chassis ground; no shorts to battery voltage
Diagnostic algorithm
- Retrieve all related trouble codes and live data with a scan tool. Note freeze-frame conditions and when the code set.
- Perform a visual inspection of the sensor, connector, and harness for damage, corrosion, or pin deformation. Repair obvious wiring damage.
- Verify power and ground at the sensor connector with key on. Confirm reference voltage (approx. 5 V) and ground continuity to chassis ground.
- Backprobe the sensor output while monitoring live voltage or CAN messages. With steering input (wheel turned slowly), confirm output changes smoothly and stays within expected range.
- Perform wiggle/strain tests on the wiring while watching live data to detect intermittent opens/shorts.
- If out-of-range or no signal, check continuity from the sensor connector to the EPS/control module connector. Repair any open/shorts.
- If wiring and connectors are good but signal remains bad, replace the VES/torque sensor and retest.
- If sensor replacement does not correct the issue, confirm proper communication and power to the EPS module. Consider module diagnostics or replacement per manufacturer procedures.
- After repairs, clear codes, perform any required steering sensor relearn/calibration procedures, and road test to verify the fault does not return.
Likely causes
- Corroded or pushed-back connector at the steering column torque/effort sensor
- Broken or chafed harness where it flexes in the column
- Sensor internal fault (out-of-range voltage or drift)
- Poor ground at chassis or module causing reference voltage changes
- EPS module failure or loss of CAN communications presenting as sensor error
Fault status
Status
Variable Effort Steering sensor output out of range or performing inconsistently; steering assist may be reduced and a fault lamp may be set.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
C0625
HUMMER
C — Chassis
Left Rear Position Sensor Malfunction
Views:
UK: 12
EN: 21
RU: 12
AI status
Completed
Completed
100%
Causes
- Failed or degraded VES (variable effort/torque) sensor
- Open, short or damaged wiring between sensor and control module
- Poor or corroded connector or grounding at sensor or module
- Intermittent connection due to bent pins, water intrusion or movement
- Faulty power/ground reference (blown fuse, poor battery connection)
- Faulty electric power steering (EPS) control module or related ECU
Symptoms
- EPS/Power Steering warning lamp or traction/ABS lamp may illuminate
- Reduced or inconsistent steering assist (heavy or abrupt changes in effort)
- Steering feel changes, uneven or jerky steering response
- Vehicle may enter a reduced-assist or limp steering mode
- Related fault codes or loss of steering-related data on scan tool
What to check
- Scan for stored and pending DTCs; record freeze frame and live data
- Visually inspect sensor, connector, and harness along the steering column for damage or corrosion
- Check fuses and power/ground at the EPS/steering sensor circuit
- Wiggle test harness with engine on to look for intermittent faults while monitoring live sensor data
- Check for related communication codes (U- or C- codes) indicating CAN/ECU issues
- Verify steering column is free to move and not binding
Signal parameters
- Sensor reference: typically 5 V reference or vehicle-specific regulated reference
- Sensor ground: chassis or dedicated ground circuit (should be near 0 V)
- Sensor output: typically variable voltage within 0.5–4.5 V or a CAN data message representing torque/effort
- Signal update rate: commonly 50–200 Hz (real-time torque/effort values)
- Expected continuity: low resistance between sensor ground and chassis ground; no shorts to battery voltage
Diagnostic algorithm
- Retrieve all related trouble codes and live data with a scan tool. Note freeze-frame conditions and when the code set.
- Perform a visual inspection of the sensor, connector, and harness for damage, corrosion, or pin deformation. Repair obvious wiring damage.
- Verify power and ground at the sensor connector with key on. Confirm reference voltage (approx. 5 V) and ground continuity to chassis ground.
- Backprobe the sensor output while monitoring live voltage or CAN messages. With steering input (wheel turned slowly), confirm output changes smoothly and stays within expected range.
- Perform wiggle/strain tests on the wiring while watching live data to detect intermittent opens/shorts.
- If out-of-range or no signal, check continuity from the sensor connector to the EPS/control module connector. Repair any open/shorts.
- If wiring and connectors are good but signal remains bad, replace the VES/torque sensor and retest.
- If sensor replacement does not correct the issue, confirm proper communication and power to the EPS module. Consider module diagnostics or replacement per manufacturer procedures.
- After repairs, clear codes, perform any required steering sensor relearn/calibration procedures, and road test to verify the fault does not return.
Likely causes
- Corroded or pushed-back connector at the steering column torque/effort sensor
- Broken or chafed harness where it flexes in the column
- Sensor internal fault (out-of-range voltage or drift)
- Poor ground at chassis or module causing reference voltage changes
- EPS module failure or loss of CAN communications presenting as sensor error
Fault status
Status
Variable Effort Steering sensor output out of range or performing inconsistently; steering assist may be reduced and a fault lamp may be set.
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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