C050FLeft Rear Wheel Speed Sensor A Circuit High
- Generic OBD-II code · Chassis
- Turns on the check-engine light
- Can trigger limp mode
- How the car detects it
- C050F covers the opposite electrical case: the left rear circuit sits too high, as when the signal wire touches a battery-fed conductor. For GM's 2016 hybrids, 12 V surpassed on the signal wire for 0.12 s, with more than 6.9 V system voltage, is the trigger; the 2023 tables instead look at current and flag a signal wire carrying over 50 mA, again within 0.12 s and as Type A. Mitsubishi lists C1065-12 as C050F, a short circuit found within one second that lights the MIL after one trip. Rear harnesses often share a loom with parking brake motor, trailer socket or tail lamp feeds, so insulation damage near those conductors is worth checking before a sensor is replaced.
- What you may notice
- ABS and stability lamps on immediately, MIL on some makes
- No ABS regulation, rear brake force distribution in fallback mode
- Likely causes
- LikelySignal wire shorted to a battery-fed circuit in the rear loom
- PossibleLeft rear sensor draws excessive current internally
- RareBrake module input stage defective
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.