C0025
LF Wheel Speed Sensor Circuit Intermittent
2002-2004 Audi A6 3.0L V6
Moderate SeverityChassisGeneric (SAE)
Description
The left front wheel speed sensor signal drops out intermittently during driving.
Symptoms
- ABS light on intermittently
- Sporadic traction control activation
- ABS works sometimes but not always
Common Causes
- Damaged wiring at flex point near suspension
- Corroded connector pins
- Intermittent sensor internal fault
- Loose sensor mounting
Diagnostic Steps
- Wiggle-test wiring harness while monitoring sensor signal
- Inspect connector for corrosion or backed-out pins
- Check sensor mounting bolt torque
- Road test while monitoring live data
- Inspect wiring routing near suspension components
Repair Notes
Repair wiring at chafe point or replace connector. Re-secure sensor.
Related Codes
Other Chassis Codes
- C0021LF Wheel Speed Sensor Range/Performance
- C0022RF Wheel Speed Sensor Range/Performance
- C0023LR Wheel Speed Sensor Range/Performance
- C0024RR Wheel Speed Sensor Range/Performance
- C0026RF Wheel Speed Sensor Circuit Intermittent
- C0027LR Wheel Speed Sensor Circuit Intermittent
- C0028RR Wheel Speed Sensor Circuit Intermittent
- C0035Left Front Wheel Speed Sensor Circuit
- C0036Left Front Wheel Speed Signal Erratic
- C0040Right Front Wheel Speed Sensor Circuit
C0025 on Other Vehicles
Common Questions
What does code C0025 mean on a 2002-2004 Audi A6?
C0025 stands for "LF Wheel Speed Sensor Circuit Intermittent". The left front wheel speed sensor signal drops out intermittently during driving.
What are the symptoms of C0025 on a Audi A6?
Common symptoms of C0025 include: ABS light on intermittently, Sporadic traction control activation, ABS works sometimes but not always.
What causes C0025 on a 2002-2004 Audi A6?
Common causes of C0025 include: Damaged wiring at flex point near suspension, Corroded connector pins, Intermittent sensor internal fault, Loose sensor mounting.