Chassis
generic / SAE
C0023
ABS Pump Motor Circuit High
Voltage on the pump motor control line is above the expected range, typically caused by a short to battery voltage or a stuck relay.
SystemChassis
Typegeneric / SAE
GroupC0
Range / number– / 23
Possible causes
- Wiring shorted to battery voltage high
- Relay contacts welded closed medium
- Connector pins corroded - high contact resistance low
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 120–800 €
- Estimated time: 1–3 h
- Component: abs pump motor
- Component: pump motor relay
- Component: control wiring
Sources
References
sae:J2012