Description
Overview
This Accelerator Pedal Potentiometer (throttle position sensor) is a direct-fit replacement designed for PSA Group diesel engines. It measures the accelerator pedal position and sends a variable electrical signal to the engine control unit (ECU) to manage fuel delivery, turbo control and throttle response. The unit is commonly used on Citroën and Peugeot vehicles equipped with 1.6, 2.0 and 2.2 HDi engines.
Compatibility
Compatible with PSA diesel platforms powered by 1.6, 2.0 and 2.2 HDi engines. These engines are fitted across a range of Citroën and Peugeot models (for example: C4, C5, Xsara, Berlingo, 307, 308, 407 and Partner), but final fitment must always be confirmed by part number and vehicle VIN.
Fitment And Replacement
Installation is straightforward for experienced technicians and competent DIYers. Typical steps:
- Disconnect the negative battery terminal to prevent electrical damage.
- Remove lower dash or pedal trim to access the accelerator pedal assembly.
- Unplug the electrical connector and remove the retaining bolts securing the potentiometer to the pedal box.
- Fit the new potentiometer, torque bolts to manufacturer specifications, reconnect the plug and reassemble trims.
- Clear any stored fault codes and perform a pedal adaptation or calibration if required by the vehicle’s ECU.
Required tools: basic hand tools (sockets, Torx or hex drivers depending on vehicle), diagnostic scanner for code clearance and adaptation. If unsure, have the replacement fitted and calibrated by a professional.
Failure Symptoms And Causes
Common symptoms of a failing accelerator potentiometer include inconsistent engine response to pedal input, limp-home mode, throttle hesitation, surging, and illumination of the engine management light (often accompanied by throttle or sensor fault codes). Typical causes are internal wear of the potentiometer track, contamination, moisture ingress, connector corrosion or wiring damage.
Technical Information
- Manufacturer: PSA Group / Citroën / Peugeot
- Model: Accelerator Pedal Potentiometer (Throttle Position Sensor)
- Product Codes: 963977180, 1920X1, 1920AK
- Additional Numbers: 9643365680, 445821001002, 19209W
Notes For Buyers
Always verify the part number against your vehicle’s existing component or workshop manual before purchase. While the unit is a direct replacement for the listed codes, electronic calibration or ECU adaptation may be required after installation to restore optimum throttle mapping.
Why Choose This Part
Provides a reliable, direct-fit solution to restore correct pedal-to-ECU signalling. Clear reference numbers and straightforward mechanical fitment make it ideal for professional garages and competent DIY repairs.
