C055AABS Pump Motor Supply Voltage Circuit A High
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- Supply voltage A of the ABS pump motor is above its upper limit. The motor draws heavy current, so overvoltage stresses motor, relay or semiconductor switch; typical causes are a faulty alternator regulator, a jump-start or charger at too high a voltage, or a measuring fault in the module. No maker documents C055A publicly. Mitsubishi shows comparable limits on the 2023 Outlander PHEV: the motor feed is specified at 10–16 V, and the brake unit stores C1056-17 (generic C0565, ABS module system voltage high) once its ignition supply reaches at least 16 V, with a detection delay of at most 1 s, suspending ABS, ASC and related functions. Circuit B has its own codes (C05A5 ff.). Measure the charging voltage first.
- What you may notice
- ABS and ESC warning lamps on
- Other overvoltage warnings or flickering lights at the same time
- Likely causes
- LikelyAlternator regulator or DC/DC converter delivering too high a voltage
- PossibleJump-start or battery charger with excessive voltage
- RareVoltage measurement fault in the ABS control unit
- Repair
- Medium · Usually a job for a workshop.Typical cost: €30 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.