C0510Left Rear Wheel Speed Sensor A Intermittent/Erratic
- 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
- C0510 flags a left rear speed signal that jumps instead of changing smoothly. GM's 19OBDG03D EBCM logic counts every moment in which the unfiltered wheel acceleration exceeds 491 m/s² at vehicle speeds beyond 3.58 m/s and sets the code once that tally reaches 40 s; a second path latches it within 25 ms when more than 55 edges arrive too quickly. GM names loose mounting, missing teeth on the tone ring and electromagnetic interference as causes. Mitsubishi's C1065-38 runs between 10 and 60 km/h and counts as C0510 after two trips. On the rear axle, load matters: a Stellantis STAR case for the Ram 3500 describes erratic rear sensor codes only with payload or a trailer on rough pavement, without a part fault.
- What you may notice
- ABS or stability lamp on after bumps, railway crossings or rumble strips
- Brief, unexpected ABS pulsing at the rear
- Fault often gone after the next ignition cycle
- Likely causes
- LikelySensor loose in its bore or play in the rear wheel bearing
- PossibleMissing or damaged teeth, rust flakes on the tone ring
- PossibleWire breaking up intermittently as the rear suspension moves
- RareHeavy payload or trailer on rough roads (Ram 3500 case)
- 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.