C0517 code meaning
Right Rear Wheel Speed Sensor A Correlation
Chassis system Generic code C05xx codes Check engine light
What C0517 means
C0517 reports that the right rear speed disagrees with the rest of the vehicle. GM's 2025 tables (25OBDG04A) run missing, dropout, fast-missing and too-fast checks for this wheel; the missing-sensor test, a wheel under 1.5 km/h while others exceed 6 km/h, is rated Type B there, i.e. MIL after two trips. The same tables park an internal fault under C0517: when the sensor supply driver's requested and reported states, exchanged with the ASIC over SPI, disagree for 100 ms, the code is set without any wiring fault outside. Mitsubishi lists C1067-64 as C0517 and checks the right rear against the others between 10 and 60 km/h, citing tire size. GM bulletin PIT5950 includes C0517 among repeat codes after a wrong sensor was fitted.
C0517 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 repairAfter a drive cycle
Symptoms of C0517
- ABS and stability lamps after driving off or at moderate speed
- Code returns after sensor replacement if the true cause is elsewhere
Common causes of C0517
- Most likelyRight rear tire not matching the others in size or wear
- PossibleWeak encoder or excessive air gap at the right rear
- Less likelyWrong sensor installed during an earlier repair
- Less likelySensor supply driver inside the brake module faulty (GM)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Wss rrTone ring rrTiresBrake control module
What each part of C0517 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 17 | The exact fault in that area. |
What to do next
- Note C0517 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 C0517
What does C0517 mean?
C0517 means "Right Rear Wheel Speed Sensor A Correlation". C0517 reports that the right rear speed disagrees with the rest of the vehicle. It is a generic code, so it means the same on every make.
Is it safe to drive with C0517?
Drive gently and only to a workshop. With C0517 the car can go into limp mode (reduced power) to protect itself.
Will C0517 fail an emissions test?
C0517 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 C0517 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 C0517 clear itself after the repair?
After the repair the car has to complete a drive cycle (a mix of city and highway driving) before the test runs again. Until then the readiness monitor shows "not ready", which can fail an inspection.