C050D code meaning
Left Rear Wheel Speed Sensor A Range/Performance
Chassis system Generic code C05xx codes Check engine light
What C050D means
C050D says the left rear signal exists but is not trustworthy. In GM's 23OBDG07 tables several checks share this code: a weak magnetic flux under 2.2 mT across at least five wheel turns (detected after 8 s at 3.1 mph or 22 s at 1.24 mph), missing standstill pulses for 3.6 s, and an undervoltage on the sensor supply; all are Type B with two trips, and the tables list Bosch, Continental and DF11i sensor variants. GM's 2019 tables add a grey-zone current between 7 and 28 mA for 750 ms. Stellantis lists C050D as a left rear plausibility error in PCM reflash bulletins such as 18-075-20 for the 2018 Jeep Compass. Mitsubishi files C1065-92 as C050D and points to tire size and the sensor rotor.
C050D 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 C050D
- ABS and stability lamps come on only after some driving
- Stability or traction control intervenes without reason at low speed
- Code may be stored without a lit MIL on some Stellantis models
Common causes of C050D
- Most likelyAir gap to the rear encoder too large (sensor not seated, worn or loose hub bearing)
- PossibleContact resistance or leakage in the rear sensor wiring
- PossibleLeft rear tire differs in rolling circumference
- Less likelyControl module software sets the code falsely (Stellantis reflash)
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Wss lrTone ring lrTires
What each part of C050D means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 0D | The exact fault in that area. |
What to do next
- Note C050D 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 C050D
What does C050D mean?
C050D means "Left Rear Wheel Speed Sensor A Range/Performance". C050D says the left rear signal exists but is not trustworthy. It is a generic code, so it means the same on every make.
Is it safe to drive with C050D?
Drive gently and only to a workshop. With C050D the car can go into limp mode (reduced power) to protect itself.
Will C050D fail an emissions test?
C050D 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 C050D 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 C050D 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.