Description
Steering angle sensor for CITROËN C4 and C4 Picasso
The steering angle sensor is an essential safety and comfort component for Citroën C4 and C4 Picasso models. It measures the exact position and rotational movement of the steering wheel and provides data to systems such as ABS, ESP/ESC, traction control and electronic power steering. This used OEM-quality sensor is frequently searched by its part numbers, making it easy to locate for fast replacement during workshop service or DIY repairs.
Technical Information
- Manufacturer: Stellantis
- Model: Citroën C4, Citroën C4 Picasso
- Product Codes: 0265005486, 9650236180, 4545H8
- Additional Numbers: 265005486
Function And Application
The steering angle sensor detects the angular position and rate of turn of the steering wheel. Its signal is used by electronic stability control (ESP/ESC), anti-lock braking (ABS), traction control and steering-related assistance systems to calculate wheel slip, apply targeted braking and adjust steering assistance. Accurate steering angle data is also important after wheel alignment or suspension repairs to ensure correct vehicle behavior.
Replacement Procedure
Recommended steps for removal and installation (general guideline for experienced mechanics and DIYers):
- Park the vehicle on level ground, engage parking brake and turn off ignition.
- Disconnect the battery negative terminal before starting any work to prevent electrical damage.
- Remove lower and upper steering column trims to access the sensor (location varies by model).
- Unplug the electrical connector and remove the retaining screws or clips securing the sensor.
- Install the new sensor in the original orientation, tighten fasteners to manufacturer torque, reconnect the plug and reassemble trims.
- Perform steering angle sensor calibration/reset using a suitable diagnostic tool compatible with PSA vehicles. Calibration is required to ensure correct ESP/ABS/steering system operation.
Installation Recommendations
- Always disconnect the battery before removal to avoid short circuits or airbag system faults.
- Keep the steering wheel centered while replacing the sensor to simplify calibration.
- Use a diagnostic tool that supports steering angle calibration; some faults will persist until the sensor is properly calibrated.
- Inspect connectors and wiring for corrosion or damage; replace any compromised harness or connector pins to prevent intermittent faults.
- Follow OEM torque values for fasteners and avoid forcing connectors to prevent breakage.
Most Common Failure Causes
- Electrical faults: damaged wiring, poor connector contact or corrosion leading to intermittent signals.
- Mechanical damage: impact to the steering column during accident or improper handling during repairs.
- Wear and degradation: internal sensor wear or contamination over time, especially in older vehicles.
- Faulty installation or missing calibration after replacement, which can trigger warning lights and disable stability functions.
Searchable OEM numbers (0265005486, 9650236180, 4545H8) are commonly used by workshops and online parts catalogs — enter the part number for fast matching. This steering angle sensor is a cost-effective service part for restoring correct ABS/ESP function and steering system reliability on Citroën C4 and C4 Picasso vehicles. Order now to minimize workshop downtime and get the vehicle back on the road with reliable steering control.
