Description
Steering Angle Sensor for Citroën C4 & C4 Picasso, compatible with PSA vehicles. This vital sensor measures the exact steering wheel position and supplies that information to ABS/ESP systems and other electronic stability controls. Replacing a faulty sensor restores correct steering-angle data and can eliminate warning lights related to stability control.
Function
The steering angle sensor detects the steering wheel rotation and return angle, providing real-time data to the vehicle’s stability control, traction control and ABS systems. Accurate input from this sensor is essential for correct operation of electronic steering assistance and safety systems.
Compatibility
Designed primarily for Citroën C4 and C4 Picasso models. Check part numbers to confirm exact fitment with your vehicle.
Replacement Procedure
Typical replacement steps for a trained technician or experienced DIY mechanic:
- Disconnect the battery and wait for system discharges to avoid airbag deployment risk.
- Center the front wheels and lock the steering straight.
- Remove the driver airbag and steering wheel following manufacturer safety procedures.
- Remove the clock spring/covering components to access the steering angle sensor unit.
- Unplug the electrical connector and remove the sensor; install the new sensor in the correct orientation.
- Reassemble steering wheel components, reconnect the battery and perform electronic calibration with a diagnostic tool.
Common Symptoms And Failure Causes
- Visible signs: ABS, ESP or Traction Control warning lights on the dash.
- Behavioral signs: Erratic stability control intervention, incorrect steering wheel position display, or loss of accurate steering assist.
- Typical causes: Electrical faults, internal sensor wear, corrosion of connectors, physical impact from an accident, or damage during removal/installation.
Installation & Calibration
After fitting, electronic calibration with a compatible diagnostic tool (for PSA vehicles typically Diagbox / Lexia or equivalent) is usually required to synchronize the new sensor with the vehicle’s control units. Without proper calibration, ESP/ABS systems may remain disabled or display faults.
Technical Information
- Manufacturer: PSA (Citroën / Peugeot)
- Model: Citroën C4, Citroën C4 Picasso
- Product Codes: 0265005486, 9650236180
- Additional Numbers: 9662937380, 4545H8
Note: Always verify fitment by comparing part numbers. If you are not experienced with steering and airbag systems, have the replacement and calibration carried out by a professional workshop to ensure safety and correct system operation.
