C0050Right Rear Wheel Speed Sensor Circuit Malfunction
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- A general circuit-malfunction code for the right rear wheel speed sensor, covering an electrical fault not resolved to a more specific sub-type: open circuit, short to power or ground, or a signal that drops out or becomes implausible while driving. The active sensor reports rear wheel rotation to the ABS/ESC module for anti-lock, traction and stability control and electronic brake-force distribution; a chafed or broken harness, a failed sensor element or a corroded connector interrupts it, often intermittently. ABS, traction and stability control are disabled and the ABS warning lamp is set while base braking remains. Bosch active wheel speed sensors use a Hall element reading a magnetic encoder and need an intact two-wire circuit. No code-specific public bulletin was confirmed; the entry follows the SAE J2012 generic definition.
- What you may notice
- ABS warning lamp on
- ABS and stability control disabled
- Speedometer may read erratically
- Likely causes
- LikelyBroken or chafed sensor harness wiring
- PossibleWheel speed sensor failed
- RareCorroded sensor connector
- Repair
- Medium · Often possible to do yourself.Typical cost: €60 – €450
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.