High-quality Bosch ESP sensor designed for Citroën C4 and C4 Picasso vehicles, commonly referenced under part numbers 0265005292, 9649904380 and 454921. This sensor supplies real-time motion data to the vehicle stability control (ESP/ABS) system, helping the ECU to detect and correct understeer/oversteer and improve active safety. Ideal for professional workshops and experienced DIYers who need a reliable replacement part with clear cross-reference numbers for fast identification.

Key Benefits

Robust Bosch manufacturing for long service life, accurate dynamic sensing to maintain ESP performance, direct-fit replacement for compatible Citroën models, and clear OE cross references to simplify ordering. Replacing a faulty sensor restores proper stability control behavior, reduces dashboard warnings (ESP/ABS), and prevents unnecessary ECU interventions during driving.

How It Works

The sensor provides the vehicle’s stability control unit with movement-related signals used to assess lateral and rotational dynamics. The ESP/ABS controller uses this information to modulate braking and engine torque to stabilize the vehicle. A correctly functioning sensor is essential for the ESP system to react quickly and accurately in emergency maneuvers.

Replacement Procedure

General replacement steps (for experienced technicians and competent DIYers):

• Disconnect the battery before starting work to avoid electrical damage.
• Locate the faulty ESP sensor (refer to vehicle repair manual for exact position).
• Disconnect the electrical connector and remove the mounting fasteners.
• Install the new sensor, secure mounting bolts to the manufacturer’s specification, and reconnect the connector.
• Reconnect the battery and clear any stored fault codes with a diagnostic tool.
• Perform the required sensor calibration/initialization with appropriate diagnostic equipment so the ESP system recognizes the new sensor and sets zero offsets.

Installation Recommendations

Always follow the vehicle manufacturer’s service instructions. Use proper torque settings for mounting bolts and ensure connectors are clean and fully engaged. After installation, use a diagnostic tool to clear faults and run any manufacturer-recommended calibration or initialization routine for the ESP system. If you are unsure about calibration steps, have the procedure performed by a technician with PSA diagnostic equipment.

Why This Part Fails Most Often

Common causes of failure include water ingress and corrosion of the connector, physical damage from impacts, wiring harness abrasion, and long-term exposure to heat and vibration. Contaminated connectors or poor grounding can cause intermittent signals that trigger ESP/ABS faults. Early symptoms include ESP or ABS warning lights, reduced stability control intervention or unexpected braking events during stability control activation.

Technical Information

• Manufacturer: Bosch
• Model: Citroën C4, Citroën C4 Picasso
• Product Codes: 0265005292
• Additional Numbers: 9649904380, 454921

Suitable For

Primarily fitted to Citroën C4 and Citroën C4 Picasso applications. Commonly searched by OE/Cross-Reference numbers 0265005292, 9649904380 and 454921—use these codes to quickly find the correct replacement for the affected vehicle.

Notes For Professionals

Use OEM repair information to confirm sensor location and calibration procedure. Proper initialization after replacement is crucial to restore full ESP functionality and to avoid persistent warning lights or degraded system performance.

High-quality Bosch ESP sensor designed for Citroën C4 and C4 Picasso models. This sensor provides critical input to the Electronic Stability Program (ESP/ESC), helping the vehicle detect and counteract understeer or oversteer by measuring rotational/kinetic movement. Suitable for professional workshops and experienced DIY mechanics, the unit is often searched for and sold under its part numbers 0265005715, 265005715, 9663138180 and 454921. Replacing a faulty ESP sensor restores proper stability control behavior, eliminates ESP warning lights, and prevents unwanted intervention or loss of traction assistance.

Technical Information

• Manufacturer: Bosch
• Model: Citroën C4; Citroën C4 Picasso
• Product Codes: 0265005715; 265005715
• Additional Numbers: 9663138180; 454921

Function And Benefits

The ESP sensor monitors the vehicle’s angular rate/rotational movement and sends this data to the ABS/ESP control unit. Accurate readings are essential for precise braking distribution, traction control and yaw stabilization. Replacing a degraded or damaged sensor improves vehicle safety, reduces false ESP activations and ensures correct interaction with ABS and traction control systems.

Installation Recommendation

• Always Disconnect The Battery Before Work: To avoid electrical damage and ensure personal safety, disconnect the negative terminal before removing connectors or handling electronic components.
• Access And Removal: Sensor location may vary by model year and equipment level (commonly mounted near the center of the vehicle or under trim panels). Remove the required trim or panels to reach the sensor, unplug the electrical connector and remove mounting fasteners.
• Fitment And Orientation: Install the replacement sensor in the same orientation as the original and tighten mounting fasteners to the manufacturer’s specified torque.
• Calibration/Initialization: After installation, clear fault codes and perform any required sensor calibration or initialization. Some vehicles require a dedicated diagnostic tool to complete ESP/ABS learning procedures; in other cases a defined road test or static procedure specified by the service manual is needed.
• Final Checks: Verify connector integrity, secure routing of wiring, and confirm no warning lights remain after calibration. Test drive to confirm normal ESP/ABS operation.

Why This Part Fails Most Often

• Moisture Ingress Or Corrosion: Exposure to water and road salts can corrode contacts or damage the sensor housing over time.
• Connector Or Wiring Damage: Broken wires, damaged pins or poor grounding cause intermittent signals or complete sensor loss.
• Impact Or Mechanical Shock: Collisions or strong shocks can displace or damage the sensor.
• Internal Electronic Failure: Aging components and thermal stress can lead to gradual failure of the sensor electronics.

Choose the correct part number for your vehicle to ensure fitment. This Bosch ESP sensor is a direct-fit replacement for the listed Citroën C4 and C4 Picasso models and part numbers, making it a reliable choice for restoring proper stability control performance.

Order now to replace a faulty ESP sensor and restore confident handling and safety to your vehicle.