C0045moderate severityChassis
Left Rear Wheel Speed Sensor Circuit
on 2017 Audi A4 2.0L I4 TFSI · AWD
What this code means
Malfunction in left rear wheel speed sensor.
Symptoms
- ABS light on
- Rear ABS not functioning
Common causes
- Faulty sensor
- Tone ring damage
- Wiring issue
Diagnostic steps
- Test sensor
- Inspect tone ring
- Check wiring
Repair notes
Replace sensor.
Other Chassis codes on this vehicle
C0021
LF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0025
LF Wheel Speed Sensor Circuit Intermittent
C0026
RF Wheel Speed Sensor Circuit Intermittent
C0027
LR Wheel Speed Sensor Circuit Intermittent
C0028
RR Wheel Speed Sensor Circuit Intermittent
C0035
Left Front Wheel Speed Sensor Circuit
C0036
Left Front Wheel Speed Signal Erratic