C0501Left Front Wheel Speed Sensor A Range/Performance
- Generic OBD-II code · Chassis
- Turns on the check-engine light
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- C0501 means the left front speed signal is present but does not fit the situation. GM shows how differently this is judged: its 2016 hybrid tables flag the code when that wheel reads 0 mph while the other three exceed 7.45 mph at a vehicle speed above 11.8 mph (Type A), whereas the 2023 tables test the air gap and set it when magnetic flux stays below 2.2 mT for at least five wheel turns, as Type B with two trips. Mitsubishi derives C1061-92, its C0501, from a speed gap to the other wheels between 10 and 60 km/h and names wrong tire sizes and the sensor rotor. Stellantis reprogrammed engine controllers of the 2017 Cherokee 3.2 because C0501 was being stored falsely there, adding that on that model it does not light the MIL.
- What you may notice
- ABS and stability warning lamps on after driving, not at key-on
- Unexpected ABS or traction control intervention at low speed
- Code stored in the engine controller without MIL (Stellantis)
- Likely causes
- LikelySensor not fully seated or air gap to the tone ring too large
- PossibleTire on the left front differs in size from the specified one
- PossibleTone ring or magnetic encoder damaged or dirty
- RareControl module software sets the code falsely (Stellantis reflash)
- Repair
- Medium · Often possible to do yourself.Typical cost: €0 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.