C0514 code meaning
Right Rear Wheel Speed Sensor A Circuit Low
Chassis system Generic code C05xx codes Check engine light
What C0514 means
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.
C0514 at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C0514
- ABS lamp and service stability message
- Electric parking brake warning on some models (Mitsubishi)
- ABS and stability control switched off
Common causes of C0514
- Most likelyHarness worn through and grounded near the rear axle or drive unit
- PossibleRight rear sensor defective
- Less likelyBrake module circuit board or ASIC faulty (GM lists it)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Wss rrSensor wiring
What each part of C0514 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 14 | The exact fault in that area. |
What to do next
- Note C0514 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about C0514
What does C0514 mean?
C0514 means "Right Rear Wheel Speed Sensor A Circuit Low". C0514 reports the right rear sensor circuit below its valid range. It is a generic code, so it means the same on every make.
Is it safe to drive with C0514?
Drive gently and only to a workshop. With C0514 the car can go into limp mode (reduced power) to protect itself.
Will C0514 fail an emissions test?
C0514 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is C0514 to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will C0514 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.