C050ELeft Rear Wheel Speed Sensor A Circuit Low
- Generic OBD-II code · Chassis
- Turns on the check-engine light
- Can trigger limp mode
- How the car detects it
- C050E reports the left rear sensor circuit pulled below its expected level. GM's 2019 EBCM tables (19OBDG03D) let the Polaris ASIC set it for three separate findings: an open sensor bit, a grounded low side, looked for only at start-up or once codes have been cleared, and sensor undervoltage, which needs only 20 ms; all are Type A with the MIL. The 2025 tables quantify the open-sensor bit as high-side current under 3.5 mA. Mitsubishi's C1065-11, its C050E, covers both short and open circuits and is one of the few wheel sensor faults there that also turns on the electric parking brake warning next to the ASC, ABS and engine lamps. A wire grounded against the rear subframe or a water-logged connector is the usual cause.
- What you may notice
- ABS, stability and electric parking brake warnings on (Mitsubishi)
- ABS and stability control disabled for the rest of the trip
- Likely causes
- LikelySensor wire grounded against the subframe or body
- PossibleMoisture or corrosion in the left rear connector
- PossibleLeft rear sensor shorted internally
- RareLow supply voltage at the brake module (fuse, battery)
- Repair
- Medium · Often possible to do yourself.Typical cost: €30 – €400
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.