C050C code meaning
Left Rear Wheel Speed Sensor A Circuit/Open
Chassis system Generic code C05xx codes Check engine light
What C050C means
C050C is stored when the brake controller loses the current path to the left rear speed sensor. GM's 2023 OBD tables (23OBDG07) read 0.12 s at under 3.8 mA in the signal wire as a ground short or a break and rate the code Type A, so the MIL can come on in the first trip. Mitsubishi lists C1065-13 of the Outlander PHEV as C050C, detected within one second, with ABS, ASC and engine lamps lit. Its fail-safe list shows what a dead rear sensor costs: besides ABS, EBD and stability control, the electric parking brake function is suspended. The rear harness runs past the trailing arm or axle and flexes with every bump, which makes chafed or pulled leads typical; a sensor with an internal open is the other usual finding.
C050C at a glance
- Check engine lightYes, usually on
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyMedium, DIY possible
- Typical labor0.5 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C050C
- ABS and stability warning lamps on right after key-on, check-engine lamp on some makes
- ABS, stability control and on some models electric parking brake functions restricted
- Live data shows no left rear wheel speed
Common causes of C050C
- Most likelySensor lead chafed or torn where it follows the rear suspension
- PossibleLeft rear sensor connector corroded or not latched
- PossibleLeft rear sensor open internally
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Wss lrSensor wiring
What each part of C050C means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 0C | The exact fault in that area. |
What to do next
- Note C050C 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 C050C
What does C050C mean?
C050C means "Left Rear Wheel Speed Sensor A Circuit/Open". C050C is stored when the brake controller loses the current path to the left rear speed sensor. It is a generic code, so it means the same on every make.
Is it safe to drive with C050C?
Drive gently and only to a workshop. With C050C the car can go into limp mode (reduced power) to protect itself.
Will C050C fail an emissions test?
C050C 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 C050C to fix?
Difficulty: medium. A typical repair takes 0.5 to 2.5 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will C050C clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.