Chassis
generic / SAE
C0022
ABS Pump Motor Circuit Low
Voltage on the pump motor control line is below threshold. Typical causes are a short to ground or interrupted positive supply.
SystemChassis
Typegeneric / SAE
GroupC0
Range / number– / 22
Possible causes
- Wiring shorted to ground high
- Pump motor relay failed 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: power supply wiring
Sources
References
sae:J2012