C0057high severityChassis
ABS Rear Inlet Valve Solenoid Circuit
on 2023 BMW i7 M70 Dual Motor AWD · AWD
What this code means
Malfunction in the rear ABS inlet valve solenoid circuit.
Symptoms
- ABS light on
- Rear ABS not functioning
- Rear wheel lockup during hard braking
Common causes
- Rear inlet valve solenoid failure
- ABS module fault
- Wiring issue
- Contaminated brake fluid
Diagnostic steps
- Test rear solenoid resistance
- Command rear valve with scan tool
- Inspect brake fluid
- Check module connector
Repair notes
Replace ABS modulator if valve solenoid has failed internally.
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