C003FWheel Speed Sensors Rotation Direction Correlation
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- A correlation code set when the directional information from the wheel speed sensors does not agree across wheels or with other motion inputs. Directional (bidirectional) wheel speed sensors tell the ABS/ESC module whether a wheel turns forward or backward, which the module uses for hill-hold, rollback detection and stability functions. The code stores when one wheel reports a rotation direction that is implausible against the others, the selected gear or the yaw and acceleration sensors. It points to a faulty directional sensor, its wiring or the tone ring. Affected functions are disabled and the ABS warning lamp is set while base braking remains. Direction-capable sensor ICs such as Allegro's A19302 send speed plus direction over PW or AK protocol. No manufacturer documents this code publicly.
- What you may notice
- ABS warning lamp on
- Hill-hold or stability functions disabled
- Incorrect rollback or direction detection
- Likely causes
- LikelyFaulty directional wheel speed sensor
- PossibleDamaged tone ring giving false direction
- RareSensor wiring fault or miswire
- Repair
- Medium · Often possible to do yourself.Typical cost: €60 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.