C0508 code meaning
Right Front Wheel Speed Sensor A Circuit Low
Chassis system Generic code C05xx codes Check engine light
What C0508 means
C0508 reports the right front sensor circuit below range. A 2024 Jeep Wrangler case from the Stellantis STAR center shows a typical picture: after an earlier repair the ABS lamp came on with C0508-00, ABS disabled and implausible-speed network codes; the sensor harness had been pinched and only needed rerouting. Audi's bulletin 2061331/1 for 2017–2021 A4 and A5 family cars stores C050800 as short to ground when a wire is poorly crimped in the front sensor connector. GM's 2023 tables use C0508 for signal patterns that the current, supply and voltage monitors cannot classify as either a fault or a valid signal (0.12 s, Type A). Mitsubishi's C1063-11 covers short and open circuits on the right front and also lights the parking brake warning.
C0508 at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.3 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C0508
- ABS lamp on, often right after a repair
- Additional network codes about implausible wheel or vehicle speed
- Parking brake warning on some models
Common causes of C0508
- Most likelySensor harness pinched or misrouted after suspension or brake work
- PossiblePoorly crimped terminal in the sensor connector (Audi)
- Less likelyRight front sensor shorted internally
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Wss rfSensor wiring
What each part of C0508 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 08 | The exact fault in that area. |
What to do next
- Note C0508 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 C0508
What does C0508 mean?
C0508 means "Right Front Wheel Speed Sensor A Circuit Low". C0508 reports the right front sensor circuit below range. It is a generic code, so it means the same on every make.
Is it safe to drive with C0508?
Drive gently and only to a workshop. With C0508 the car can go into limp mode (reduced power) to protect itself.
Will C0508 fail an emissions test?
C0508 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 C0508 to fix?
Difficulty: medium. A typical repair takes 0.3 to 2.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will C0508 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.