C0512Right Rear Wheel Speed Sensor A Circuit/Open
- Generic OBD-II code · Chassis
- Turns on the check-engine light
- Can trigger limp mode
- How the car detects it
- C0512 is the open-circuit code for the right rear wheel. GM's 2016 hybrid tables run the check only after the sensor self-test has finished and system voltage is above 6.9 V; then 0.12 s with less than 3.8 mA flowing in the signal wire is enough for a Type A entry. The XT4 section of GM's 2019 tables words the same test as a ground short or interruption and monitors the supply line separately. Mitsubishi assigns C1067-13 to C0512 with a delay of at most one second and lists harness, sensor and the brake unit's power feed as suspects. Because an active sensor modulates a two-wire current, as Bosch describes it, a reading near zero cannot be a slow wheel; it points to a broken lead, an unplugged connector or a dead sensor.
- What you may notice
- ABS and stability lamps on at key-on, sometimes the MIL
- Right rear wheel speed reads zero in live data
- ABS and traction control unavailable
- Likely causes
- LikelyBroken lead or unplugged connector at the right rear
- PossibleRight rear sensor open internally
- RareFuse or power feed of the brake module (Mitsubishi lists it)
- 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.