The BOSCH inertial control unit (kinetic ESP sensor) is a critical safety component for Citroën and Peugeot vehicles equipped with electronic stability control. The sensor measures vehicle accelerations and rotational movements to support ABS/ESP systems, improving vehicle stability during emergency maneuvers, cornering and traction loss. This part is commonly searched by its product numbers, so check the listed codes when matching replacement units.

Technical Information

• Manufacturer: Bosch
• Compatible Models: Citroën C4, Citroën C8, Peugeot 307, Peugeot 407, Peugeot 807
• Product Codes: 0265005714, 9663187680
• Additional Numbers: 9811627180, 454939, 0265005291, 265005714, 9649400180

Function And Symptoms

The inertial sensor provides the ESP/ABS control unit with yaw rate and acceleration data. When the sensor fails or reports incorrect values, the vehicle can display ESP/ABS warning lights, reduced stability control functionality, unexpected ABS activation, or a change in handling (pulling or instability during cornering). Fault codes related to the sensor may appear in the ABS/ESP unit memory.

How To Replace

1. Park on a level surface, engage the parking brake and disconnect the negative battery terminal before any work.
2. Access the sensor location (typically mounted centrally under the dash or on the body tunnel; location varies by model). Remove interior trim panels as required to reach the unit.
3. Unplug the electrical connector and remove mounting fasteners. Handle the sensor carefully to avoid shocks or contamination.
4. Install the replacement unit in the correct orientation, secure fasteners to the manufacturer’s specification, reconnect the electrical connector and reassemble trim.
5. After installation, the ESP/ABS system requires initialization or calibration using an appropriate diagnostic tool to ensure correct sensor alignment and operation.

Installation Recommendations

• Always disconnect the battery before removal and follow the vehicle manufacturer’s disassembly procedure to avoid damage to connectors or control electronics.
• Use proper tools and avoid excessive force on connectors and PCB housings. Keep the sensor dry and free from contaminants during installation.
• After fitting, perform an electronic calibration/initialization of the ESP/ABS system with PSA service equipment (DiagBox) or an equivalent diagnostic tool capable of initializing ESP sensors.
• If unsure about calibration procedures, have the initialization performed by a qualified technician with PSA diagnostic equipment.

Most Common Failure Causes

• Mechanical shock or impact (accident damage) that disturbs sensor alignment or internal components.
• Water ingress or corrosion at connectors causing intermittent signals or open circuits.
• Electrical faults such as short circuits, voltage spikes or poor grounding affecting sensor electronics.
• Age-related deterioration of internal components or connector contacts.

Why Choose This Unit

Selecting the correct part number is essential for reliable ESP function. This inertial sensor corresponds to common BOSCH and OEM references used on several Citroën and Peugeot models. It is suitable for professional workshops and experienced DIY mechanics who can perform careful removal, secure installation and post-fit calibration.

High-quality Bosch kinetic ESP sensor designed as a direct-fit replacement for specific Citroën and Peugeot models. This sensor feeds the vehicle stability control (ESP/ABS) system with precise motion data so the control unit can detect and correct understeer, oversteer and other dynamic instabilities. Frequently searched by part number (for example 9649400180, 0265005291), the unit is suitable for professional workshops and experienced DIY mechanics who need a reliable, vehicle-specific component to restore correct ESP operation.

Technical Information

• Manufacturer: Bosch
• Model: Citroën C4, Citroën C8 II, Peugeot 307 II, Peugeot 807 II
• Product Codes: 9649400180, 0265005291, 9811627180
• Additional Numbers: 454939, 454926, 0265005714, 265005291, 9663187680

Function

The kinetic ESP sensor measures vehicle motion parameters (longitudinal/lateral acceleration and dynamic movement used by the ESP/ABS systems). The ESC/ESP control unit uses these signals to compare actual vehicle behaviour with driver input and to command selective braking or torque reduction to maintain stability. Accurate sensor readings are essential for predictable electronic stability control performance.

Common Symptoms of Failure

• ESP/ABS warning lamps illuminated on the dashboard.
• Intermittent or permanent loss of traction/stability control interventions.
• Unexpected ABS or ESP activation during normal driving, especially in corners.
• Diagnostic fault codes related to sensor signal or communication errors.

Why This Part Fails Most Often

Typical causes of kinetic sensor failure include moisture ingress and connector corrosion, physical damage from impacts or road debris, wiring harness fatigue or chafing, and long-term exposure to vibration and heat. Electrical faults such as intermittent connectors or internal sensor electronics degradation are also common on higher-mileage vehicles.

Replacement Guide

Intended for mechanics and competent DIYers. Typical replacement steps:

• Safety first: Disconnect the negative battery terminal before starting work to avoid electrical damage or faults.
• Locate the sensor—on Citroën/Peugeot models it is commonly mounted near the ABS/ESP unit or under the dash/center console; consult the vehicle repair manual for exact location.
• Remove any trim or covers to access the sensor, unplug the electrical connector, and unbolt the sensor from its bracket.
• Install the new sensor, secure fasteners to the manufacturer’s recommended tightness, reconnect the wiring and reassemble trim.
• After replacement clear fault codes with a diagnostic tool and perform any required calibration or adaptation of the ESP/ABS system (see next section).
• Perform a road test in safe conditions to verify normal ESP/ABS behavior.

Installation Recommendations

• Use contact cleaner on electrical connectors if corroded and ensure secure, dry connections.
• Inspect the wiring harness and repair any damaged insulation or broken wires before installing the new sensor.
• Do not reuse a damaged sensor mounting bracket; ensure the sensor is mounted solidly to avoid vibration-related faults.
• Clear all related fault codes after installation and follow the vehicle manufacturer’s calibration/adaptation procedure for the ESP/ABS system using a suitable diagnostic tool.

Calibration And Diagnostics

Replacement often requires a diagnostic tool to clear related fault codes and, in many cases, to perform sensor calibration or adaptation so the ESP system accurately interprets the new sensor’s signals. If the vehicle reports persistent errors after replacement, check connector continuity, supply voltages and any related sensors (steering angle sensor, wheel speed sensors) that can influence ESP behaviour.

Compatibility And Part Number Search

This sensor is commonly listed under multiple OEM and supplier numbers—customers often search by the part number to confirm fitment. Main references include 9649400180 and 0265005291; additional cross-reference numbers are provided in the Technical Information above. Fitment applies to specified Citroën C4, Citroën C8 II, Peugeot 307 II and Peugeot 807 II applications.

Product Overview

This ATE inertial sensor (ESP yaw/acceleration sensor) is designed for Citroën and Peugeot vehicles and is commonly referenced by part numbers 9663737780 and 454947. The unit measures vehicle rotation and lateral/longitudinal acceleration and provides critical input to the ABS/ESP stability control system. It is aimed at professional mechanics and experienced DIYers who need a reliable replacement part to restore correct ESP/traction control functionality.

Key Benefits

• Direct replacement for affected Citroën and Peugeot models, matching OEM specifications where applicable.
• Restores accurate vehicle dynamic sensing for ABS/ESP systems.
• Helps eliminate ESP/traction control warning lights and unwanted stability interventions when the sensor is faulty.
• Includes common OE/reference numbers (9663737780, 454947) that customers often search for.

Technical Information

• Manufacturer: ATE (used on Citroën/Peugeot/Stellantis platforms)
• Model: Inertial/Yaw/Acceleration Sensor (ESP)
• Product Codes: 9663737780, 454947
• Additional Numbers: 454947

Compatible Models

Typical fitment includes, but may not be limited to: Citroën C3 III, Citroën C3 Picasso, DS3, Peugeot 207. Always check the part number against the vehicle’s requirements before installation.

Function and Symptoms of Failure

The sensor provides real-time data on yaw rate and lateral/longitudinal acceleration to the vehicle’s ESP/ABS control module. When the sensor fails or drifts out of specification, you may observe one or more of the following:

• ESP/Traction Control warning light on the dashboard.
• Unintended activation or deactivation of stability interventions.
• Loss of precise brake modulation under dynamic conditions.
• Fault codes related to sensor internal errors or communication faults stored in the ABS/ESP control unit.

Why This Part Commonly Fails

Most common causes of failure are:

• Water ingress or long-term moisture exposure leading to internal corrosion or electrical faults.
• Physical damage from impacts or accidents that shift or damage the sensor housing.
• Connector corrosion, wiring damage or poor electrical contact at the connector.
• Aging and sensor drift after many years of service, causing inaccurate readings.

Installation Recommendations

Replacement should be performed by a qualified technician or an experienced DIYer familiar with vehicle safety systems. General steps and recommendations:

• Before starting, always disconnect the vehicle battery and follow the vehicle manufacturer’s safety procedures.
• Locate the sensor (typically mounted near the vehicle centerline—under the center console, under seats or on the vehicle floor depending on model) and remove interior trim to access it.
• Unplug the electrical connector and unbolt the sensor from its bracket. Keep fasteners and note original orientation.
• Fit the new sensor in the exact orientation, torque bolts to the manufacturer’s specification, and reconnect the connector.
• After mechanical installation, a calibration/initialization procedure is usually required using a diagnostic tool (e.g., manufacturer diagnostic equipment). Some vehicles may require a static or dynamic calibration routine to ensure correct sensor alignment and operation.
• Test drive the vehicle and verify that no ESP/ABS warning lights remain and that the stability control behaves normally.

Additional Notes for Professionals

Use proper diagnostic tools to clear stored fault codes and to perform any required sensor calibration or alignment. Typical workshop tools required include basic hand tools, trim removal tools, and an appropriate diagnostic interface capable of ESP system calibration.

Warranty & Quality

Part numbers 9663737780 and 454947 are commonly referenced by technicians and are included in this product description to aid searchability. For long-term reliability, ensure connectors and mounting points are free from corrosion and that the sensor is protected from moisture and mechanical damage during and after installation.

The TRW ESP Sensor is designed specifically for Peugeot 407 vehicles, offering a reliable solution to maintain and enhance your car’s electronic stability program. This sensor plays a crucial role in monitoring the vehicle’s dynamic behavior and assists in regulating stability control during sharp turns or emergency maneuvers, contributing to overall driving safety.

Usage and Installation

Ideal for professional auto mechanics and DIY car enthusiasts, this ESP sensor can be directly replaced with the original part, identified by common product codes. Installation is straightforward and requires only basic tools, reducing service time and costs significantly.

Durability and Function

The ESP sensor functions by detecting kinetic changes in the vehicle’s movement. Over time, sensors can fail due to environmental factors such as moisture, dirt ingress, or electrical wear. Regular checks or sensor replacement can prevent loss of stability control features that are vital for safe driving.

Technical Information

• Manufacturer: TRW
• Model: Peugeot 407
• Product Codes: 9661616480, 454930
• Additional Numbers: 15113704, NFP

Maintenance Advice

This ESP sensor requires minimal maintenance, making it an excellent, long-lasting part for those who prefer a dependable component without frequent servicing needs. Its robust construction ensures consistent performance, safeguarding your Peugeot 407’s stability system.

Product Overview

High-quality Bosch ESP kinetic sensor designed for Citroën and Peugeot models. This sensor provides crucial vehicle dynamics information to the ESP/ABS systems, improving stability control and braking performance. Commonly referenced by part numbers 0265005253 and 9645447780, it is a direct-fit replacement for affected factory units used on selected Citroën and Peugeot platforms.

Why This Part Matters

The ESP kinetic sensor supplies the vehicle stability control with real-time data about vehicle motion (such as rotational and inertial signals). The information is used by the ESP/ABS control unit to detect skids, intervene with braking on individual wheels, and adjust engine torque to maintain vehicle stability. A faulty sensor can lead to reduced stability control performance and trigger warning lights such as ESP or ABS on the dash.

Technical Information

• Manufacturer: Bosch
• Model: Citroën C8; Peugeot 307; Peugeot 807
• Product Codes: 0265005253; 265005253; 9645447780
• Other Numbers: 454916; 454905; 454907; NFP

Compatibility

Fits specific Citroën and Peugeot models listed above. Always check the part number (e.g., 0265005253) against the vehicle’s existing sensor to confirm fitment. The sensor is commonly searched by its Bosch number and OE references.

Replacement Procedure (Overview)

The following steps describe the typical replacement process. Procedures can vary by model—refer to the vehicle’s service manual for exact instructions:

1. Park the vehicle on level ground, engage the parking brake and disconnect the battery.
2. Locate the faulty ESP sensor (location varies by model and sensor type) and gain access by removing any necessary trim or covers.
3. Disconnect the electrical connector and remove the mounting fasteners.
4. Install the new sensor, secure mounting fasteners to the manufacturer’s torque specification and reconnect the electrical connector.
5. Reconnect the battery, clear fault codes with a diagnostic tool and perform any required calibration or system checks.

Installation Recommendations

• Always Disconnect The Battery Before Starting Work To Prevent Short Circuits And Protect Electronics.
• Inspect Connectors And Wiring For Corrosion Or Damage; Replace Damaged Clips Or Harness Sections.
• Tighten Mounting Fasteners To The Manufacturer’s Specified Torque To Ensure Correct Sensor Positioning.
• After Installation, Use A Diagnostic Tool To Clear Stored Fault Codes And Verify ESP/ABS System Operation. If The Vehicle Requires Calibration, Follow The Manufacturer’s Procedure.
• For Complex Diagnostics Or Calibration Tasks, Use Proper Diagnostic Equipment Commonly Used On PSA Vehicles (e.g., DiagBox/Lexia/PP2000) Or Seek A Qualified Technician.

Common Failure Causes

• Connector Corrosion Or Water Ingress Leading To Intermittent Signals.
• Physical Damage From Road Debris, Impact Or Improper Handling During Repairs.
• Internal Electronic Failure Due To Age, Thermal Stress Or Vibration.
• Faults In Related Wiring Or Ground Connections Causing Signal Loss.
• Post-Accident Distortion Of Mounting Points Or Body Structure Affecting Sensor Alignment.

Practical Notes For Mechanics And DIY Enthusiasts

This Bosch sensor is a commonly replaced component when ESP/ABS faults are present or when stability control performance is compromised. Keep the vehicle’s fault codes and the OE part number at hand when diagnosing. Replacing the sensor is straightforward for an experienced mechanic, but correct diagnosis, connector inspection and post-replacement verification are essential to ensure the ESP system works reliably.

Are you looking for a reliable ESP sensor for your Citroën or Peugeot? We present a high-quality Bosch part with the code 0265005975, which is compatible with several Citroën and Peugeot vehicle models. This part is the ideal choice for your vehicle repairs, guaranteeing a safe and stable driving experience.

The ESP (Electronic Stability Program) sensor is a key component of your car’s system, helping to prevent skidding in critical situations by electronically adjusting engine power and can activate brakes on individual wheels, thereby enhancing the driver’s control over the vehicle. Replacement of the sensor may be necessary in case of malfunction due to wear or damage caused by an accident.

Technical Information:
Manufacturer: Bosch
Models: Citroën C4 B7, DS4; Peugeot 308, 508, 3008, 5008
Product Codes: 0265005975, 9811627180, 454949
Other Numbers: 9811627180

This ESP sensor has been thoroughly tested and is in very good condition, ready for reinstallation. It is suitable for models such as Citroën C4 II, Citroën C4 Picasso, DS4, and Peugeot 308, 508, 3008 I, and 5008 I, making it a flexible and cost-effective solution for various types and generations of vehicles.

The part is ideal for mechanics or DIY enthusiasts looking for a reliable replacement for the original part. Its installation is straightforward and does not require special tools, making it easy even for less experienced users. With this ESP sensor, you can expect to restore the original functionality of your stability system and significantly improve the safety of your driving.

Add this Bosch ESP sensor to your cart and ensure your vehicle will be stable and safe under all conditions. Remember, the proper functioning of the ESP system is not only about protecting your safety but also about ensuring the optimal performance of your car.

This Bosch Kinetic ESP Sensor Is Suitable For Various Stellantis Models And Is Often Searched By Part Number (9664661580, 9811627180, 0265005765, 454949). Designed As A Direct-Fit Replacement For The Vehicle Electronic Stability Program, This Sensor Supplies Critical Motion Data To The ABS/ESP Control Unit To Maintain Traction And Stability. Ideal For Professional Technicians And Experienced DIY Enthusiasts, The Unit Offers Reliable Performance When Installed Correctly And Calibrated After Replacement.

Technical Information

• Manufacturer: Bosch
• Model: Citroën C4 Picasso; Citroën C5 X7; Peugeot 308; Peugeot 3008 I; Peugeot 5008 I (And Others)
• Product Codes: 9664661580; 9811627180; 0265005765; 454949
• Additional Numbers: 265005765; 0265005765; 454949

Function

The ESP Sensor Is Part Of The Vehicle Stability System. It Measures Dynamic Vehicle Movement And Sends Data To The ABS/ESP Control Module To Help Manage Braking Distribution, Traction Control And Stability Interventions. Accurate Sensor Signals Are Essential For Proper Operation Of Stability Aids.

Installation Recommendation

• Always Disconnect The Battery Before Starting Work And Follow Manufacturer Procedures To Avoid Damage To Electronics.
• Locate The Sensor According To The Vehicle Repair Manual—Inspect Mounting Position, Connector Condition And Wiring Harness Before Removal.
• Remove The Electrical Connector And Mounting Fasteners, Replace The Sensor, Then Refit Fasteners Securely. Avoid Excessive Force On Electrical Terminals.
• After Installation, Clear Fault Codes And Perform Sensor Initialization Or Calibration As Required. Calibration With PSA Diagnostic Equipment (DiagBox/Lexia) Is Recommended To Ensure Full System Functionality.
• Check For Additional Faults In The Wiring Or Connector If The New Sensor Immediately Reports Errors.

Why The Part Most Commonly Fails

Common Causes Of Sensor Failure Include Water Ingress And Corrosion, Physical Damage From Impacts Or Accidents, Connector Oxidation, Internal Electronic Faults And Long-Term Wear. Symptoms Of A Failing Sensor Typically Include ESP/ABS Warning Lights, Unstable Traction Control Behavior, Or Stored Fault Codes Related To The Stability System.

Who Should Fit This Part

Recommended For Qualified Auto Technicians And Competent DIYers With Experience In Brake And Electronic Systems. Proper Installation And Post-Fit Calibration Are Crucial For Safe Operation Of Vehicle Stability Functions.

Additional Notes

When Searching For This Item Online, Use The OE Numbers Listed Above To Improve Compatibility Matches. Replace Faulty Sensors Promptly To Maintain Vehicle Safety Systems.

This Bosch ESP (Electronic Stability Program) sensor is a direct-fit replacement designed for Citroën and Peugeot models. It supplies the ESC/ABS control unit with critical motion data to detect yaw and help maintain vehicle stability during cornering and emergency maneuvers. Ideal for fleet workshops, independent garages and competent DIYers who search by product number, this unit restores correct stability control feedback and clears related fault codes when fitted and calibrated correctly.

Technical Information

• Manufacturer: Bosch
• Model: Citroën C4, Citroën C8, Peugeot 307, Peugeot 807
• Product Codes: 0265005606, 265005606
• Additional Numbers: 454917, 9649776180, 454917 NFP

Function And Typical Symptoms

The sensor measures vehicle yaw/rotation (motion around the vertical axis) and relays that information to the ESP/ABS control module. When the sensor works correctly, the stability control system can intervene to correct oversteer or understeer situations. Common symptoms of a faulty sensor include:

• ESP/ABS warning light illuminated on the dashboard
• Intermittent or permanent loss of traction control intervention
• Unusual or delayed stability control reaction during cornering
• Stored fault codes related to yaw rate or lateral acceleration sensors

Replacement And Installation Recommendations

For a safe and reliable replacement, follow these general steps and best practices:

• Disconnect The Battery: Always isolate the negative battery terminal before starting to avoid electrical shorts.
• Access The Sensor: Depending on the model, the sensor is usually located on the body centerline under the dash, on the transmission tunnel, or near the steering column—remove trim panels as required.
• Unplug And Remove: Disconnect the electrical connector, unbolt the sensor and carefully remove it. Note Orientation—many sensors must be installed in a defined position.
• Fit New Unit: Install the replacement sensor in the same orientation, secure mounting bolts and reconnect the electrical plug. Tighten fasteners to the manufacturer’s specified torque.
• Calibration: After installation, perform a zero-point calibration / adaptation with a diagnostic tool or scan tool that supports ABS/ESP functions. Clearing fault codes and a short road test are recommended to confirm correct operation.

Tools Needed: Basic hand tools, trim tools and a diagnostic scanner capable of ESP/ABS sensor adaptation. If you are not equipped with a suitable diagnostic tool, a professional workshop can perform the calibration.

Why This Part Typically Fails

• Water Ingress Or Corrosion: Moisture penetration or corroded connectors can damage sensor electronics.
• Physical Impact Or Accident Damage: Sensors mounted near the vehicle centerline can be affected by collisions or heavy impacts.
• Electrical Faults: Wiring harness damage, short circuits or poor grounding will cause intermittent or permanent failure.
• Aging Electronics: Over time, internal components can degrade, causing incorrect signals or total failure.

Buy With Confidence: This Bosch sensor is commonly searched by its part numbers (e.g., 0265005606, 9649776180) and is intended as a direct replacement for the listed Citroën and Peugeot models. Proper installation and calibration restore full ESP functionality and remove related dashboard warnings, ensuring safe vehicle handling.

High-quality Bosch Kinetic ESP sensor designed for Citroën and Peugeot vehicles. This sensor is commonly identified by part numbers 0265005290, 265005290, 9650452180 and 454916 and is used by the vehicle stability control (ESP) system to monitor dynamic movement. Ideal for professional workshops and DIY mechanics who need a reliable replacement part that restores correct ESP operation and traction control responses.

Technical Information

• Manufacturer: Bosch
• Model: For Peugeot 307, Peugeot 607, Peugeot 807, Citroën C8
• Product Codes: 0265005290, 265005290
• Other Numbers: 9650452180, 454916

Function

The sensor measures dynamic movement parameters used by the Electronic Stability Program (ESP) and traction control systems to detect understeer, oversteer and other instability events. By supplying precise motion data to the ABS/ESP control unit, the sensor enables timely braking interventions and engine torque adjustments to maintain vehicle stability.

Compatibility And Application

Compatibility covers selected Peugeot and Citroën models that use the same ESP sensor specification. Common applications include Peugeot 307, 607, 807 and Citroën C8. Always check the part numbers against the vehicle’s requirements before ordering.

Replacement And Installation

Replacement is straightforward for a trained technician: locate the sensor (typically mounted to the vehicle body or near the ABS/ESP module), disconnect the electrical connector, remove retaining bolts, replace the sensor and reconnect. After mechanical installation, a diagnostic tool may be required to clear fault codes and, if applicable, initialize or calibrate the stability system. Always disconnect the battery before starting work and follow the vehicle manufacturer’s removal and installation procedure to avoid damage.

Recommended Tools And Notes

• Common hand tools (torque wrench recommended)
• Multimeter for basic electrical checks
• OBD2 diagnostic tool capable of reading ABS/ESP faults and performing basic calibrations
• Observe correct connector seating and secure mounting to prevent drift or vibration-induced faults

Why It Most Commonly Fails

Failures are usually caused by environmental and mechanical factors rather than routine wear: moisture ingress and corrosion of connectors, damage from impacts or accidents, wiring harness faults, and internal electronic failure due to age or thermal stress. Symptoms of a failing sensor include ESP/ABS warning lights, reduced stability control performance and fault codes stored in the ABS/ESP control unit.

Installation Recommendation

For reliable results, have the replacement performed or checked by an experienced technician. After installation, verify fault codes are cleared and perform any necessary calibration or initialization with a diagnostic tool. Always secure wiring and connectors to prevent future damage and avoid cleaning with high-pressure washers directly at sensor connectors.

This ATE kinetic ESP sensor is an OEM-compatible safety sensor designed for Citroën and Peugeot ABS/ESP systems. It is commonly referenced under the part numbers 9641342980, 10.0985-1101.4 and 454910 and is frequently searched by mechanics and DIY enthusiasts by these codes. The sensor’s role is to deliver reliable wheel/vehicle motion data to the ABS/ESP control unit, helping to maintain traction and vehicle stability under braking or dynamic maneuvers. Ideal for professional workshops and competent home mechanics who want a direct-fit replacement that restores correct ESP functionality.

Technical Information

• Manufacturer: ATE
• Model: Citroën C2, Citroën C3, Citroën C3 Pluriel, Citroën C5, Peugeot 1007
• Product Codes: 9641342980; 10.0985-1101.4
• Additional Numbers: 454910

Function And Benefits

The sensor measures kinetic/rotational movement data required by the ABS/ESP control unit to calculate slip, wheel acceleration and vehicle dynamics. A correctly functioning sensor reduces stopping distance in emergency braking, prevents wheel lock-up and enables traction control interventions. Benefits include direct-fit installation, clear identification by OEM codes for easy procurement, and restored ESP/ABS reliability after replacement.

How To Replace

Replacement is straightforward for a trained mechanic or an experienced DIYer. Typical steps:

• Park the vehicle on a level surface, engage the parking brake and disconnect the negative battery terminal to avoid electrical faults.
• Lift the vehicle safely and remove the wheel to access the sensor location at the hub/knuckle (location may vary by model).
• Unplug the sensor electrical connector and remove any retaining clips or routing fasteners.
• Remove the sensor retaining bolt(s) and extract the sensor from its mounting bore. Clean the mounting area of rust and debris.
• Fit the new sensor, ensuring full seating and correct orientation. Replace any sealing boots or clips as required and secure the connector.
• Reinstall the wheel, lower the vehicle, reconnect the battery and perform a test drive. Clear any stored fault codes with diagnostic equipment if available and verify ABS/ESP warning lamp behavior.

Installation Recommendations

• Inspect the sensor mounting bore and tone ring/reluctor for corrosion or damage before installation.
• Do Not Overtighten Retaining Bolts; secure them to a snug fit and follow vehicle manufacturer torque values where available.
• Protect the sensor cable from sharp edges and heat sources; use original routing and clips to avoid chafing.
• Clean mating surfaces and, if applicable, apply a light film of dielectric grease to the connector to prevent corrosion.
• After fitment, clear fault codes and perform a short road test to confirm the ABS/ESP lamp is extinguished and systems operate normally.

Most Common Failure Reasons

• Corrosion And Dirt Ingress: Road salt, water and brake dust can cause sensor or connector corrosion, degrading the signal.
• Physical Damage: Impacts from curbs, stones or improper handling during brake or suspension work can break the sensor or tone ring.
• Wiring And Connector Faults: Chafed cables, broken cores or corroded connectors create intermittent or no signal to the ECU.
• Reluctor/Tone Ring Damage Or Contamination: Damaged or contaminated tone rings produce incorrect readings and trigger ABS/ESP faults.
• Age And Environmental Wear: Over time seals and protective boots can degrade, allowing moisture and dirt to reach the sensing element.

When ABS/ESP warning lights appear or you experience inconsistent braking/traction control behavior, the sensor and its wiring should be among the first components to inspect. This part is widely identified by the numbers listed above, making it easy to locate and order for Citroën and Peugeot models.