OBD-II code · Chassis
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.
Is it safe to drive with C0022?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyWiring shorted to ground
- PossiblePump motor relay failed
- Less likelyConnector pins corroded - high contact resistance
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–3 h
- Emissions test
- Usually unaffected
- Parts involved
- ABS Pump Motor, Pump Motor Relay, Power Supply Wiring
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.