OBD-II code · Chassis
C055B ABS Pump Motor Supply Voltage Circuit A Low
ABS pump motor supply voltage A below expected range.
Is it safe to drive with C055B?
The car may go into limp mode (reduced power). Get it diagnosed before a long trip.
Common causes
- Most likelyWeak battery or supply resistance
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Repair at a glance
- Difficulty
- Easy
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.3–2 h
- Emissions test
- Usually unaffected
- Parts involved
- ABS Pump Motor Supply A
Related codes
- C0558Right Rear Wheel Speed Sensor A Incorrect Component Installed
- C0559Power Steering Control Module Range/Performance – Rear
- C055AABS Pump Motor Supply Voltage Circuit A High
- C055CABS Pump Motor Supply Voltage Circuit A Range/Performance
- C055DBrake Hydraulic Circuit B Leak
- C055EBrake Hydraulic Circuit A Leak
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.