C0058high severityChassis
ABS Rear Outlet Valve Solenoid Circuit
on 2013 Audi A6 3.0L Supercharged V6 · AWD
What this code means
Malfunction in the rear ABS outlet valve solenoid circuit.
Symptoms
- ABS light on
- Rear brakes lock during ABS activation
- Poor rear brake modulation
Common causes
- Outlet valve solenoid failure
- Internal modulator fault
- Brake fluid contamination
Diagnostic steps
- Test solenoid resistance
- Command valve activation
- Check brake fluid
- Inspect connector and wiring
Repair notes
Replace ABS hydraulic modulator. Flush brake system.
Other Chassis codes on this vehicle
C0021
LF Wheel Speed Sensor Range/Performance
C0021
LF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0022
RF Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0023
LR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0024
RR Wheel Speed Sensor Range/Performance
C0025
LF Wheel Speed Sensor Circuit Intermittent
C0025
LF Wheel Speed Sensor Circuit Intermittent