C05B2Steering Wheel Angle Sensor Signal - Yaw Rate Sensor Signal Correlation
- Generic OBD-II code · Chassis
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- C05B2 flags a mismatch between how far the driver has turned the wheel and how quickly the car actually rotates about its vertical axis. The stability controller turns steering wheel angle and road speed into an expected yaw rate through a single-track vehicle model; a Siemens patent applies that model only up to about 4 m/s² of lateral acceleration. Bosch gives a permitted gap of roughly 1 to 4.5 deg/s between the yaw sensor and the steering-based value and keeps stability control switched off while the fault stands, with traction control still working. No manufacturer publishes C05B2 itself. Frequent triggers are a steering angle sensor left uncalibrated after alignment or steering repairs, a loose or shifted yaw sensor, or a drifting offset. ESC is unavailable and its warning lamp remains lit.
- What you may notice
- ESC and often traction control warning lamp on
- Stability control interventions unavailable
- Steering wheel off-centre when driving straight, if alignment is the cause
- Likely causes
- LikelySteering angle sensor not recalibrated after wheel alignment, steering or column work
- PossibleYaw rate sensor or sensor cluster loose, rotated or wrongly installed
- PossibleOffset drift or internal fault in the yaw rate or steering angle sensor
- RareMismatched tyres or bent steering parts making the vehicle model invalid
- Repair
- Medium · Usually a job for a workshop.Typical cost: €60 – €600
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.