C0514Right 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
- C0514 reports the right rear sensor circuit below its valid range. GM's 2025 EBCM tables (25OBDG04A) show how broadly that is read: the Polaris ASIC raises an open-sensor bit when the high-side current drops under 3.5 mA, and a separate bit for a low side shorted to ground, both after 100 ms as Type A; the listed suspects run from sensor and harness to the printed circuit board and the ASIC. GM's 2023 tables also file signal patterns under C0514 that fit neither a known electrical fault nor a valid signal. On the 2024 Silverado EV, bulletin 24-NA-125 ties the code to a harness worn through on the rear drive unit. Mitsubishi's C1067-11 adds the parking brake warning lamp.
- What you may notice
- ABS lamp and service stability message
- Electric parking brake warning on some models (Mitsubishi)
- ABS and stability control switched off
- Likely causes
- LikelyHarness worn through and grounded near the rear axle or drive unit
- PossibleRight rear sensor defective
- RareBrake module circuit board or ASIC faulty (GM lists it)
- Repair
- Medium · Often possible to do yourself.Typical cost: €20 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.