Description
Throttle Potentiometer for Peugeot 307 CC
This accelerator pedal potentiometer (throttle potentiometer) is a direct-fit electrical component used on the Peugeot 307 CC to measure pedal position and send a precise voltage signal to the engine control unit (ECU). It is a Bosch-sourced unit commonly referenced by several product numbers, making it a sought-after spare part for workshops and DIY technicians dealing with drive-by-wire throttle systems.
Function And Benefits
The potentiometer converts the mechanical travel of the accelerator pedal into an electrical signal that the ECU uses to control throttle response. A healthy unit ensures smooth throttle mapping, accurate idle control and predictable acceleration. Replacing a faulty potentiometer restores correct pedal feel and eliminates unintended surges, hesitation or limp-home modes caused by incorrect input signals.
Common Symptoms Of A Faulty Unit
- Erratic or unresponsive acceleration and inconsistent engine revs.
- Engine warning light (Check Engine) or throttle warning lamp illuminated.
- Limp-home mode activation with reduced power.
- Intermittent loss of throttle signal or sudden surges when pressing the pedal.
Installation Recommendations
Replacement is straightforward for experienced mechanics but requires care with electrical connections and calibration. General steps:
- Disconnect the negative battery terminal before starting to avoid short circuits.
- Remove lower dash or pedal trim to access the accelerator pedal assembly—retain fasteners and trim clips.
- Unplug the electrical connector and remove the retaining screws or bolts holding the potentiometer/pedal assembly.
- Fit the new unit in the same orientation, secure fasteners to the correct torque and reconnect the electrical connector.
- Reconnect the battery. Some vehicles may require ECU adaptation or a basic throttle relearn procedure via ignition cycles or a diagnostic tool—perform as required by the vehicle’s service information.
- Verify correct operation on the road and clear any stored fault codes after replacement.
Technical Information
- Manufacturer: Bosch (OEM Supplier For Citroën/Peugeot Applications)
- Model: Peugeot 307 CC
- Product Codes: 0280755029
- Additional Numbers: 9647781377, 1601N7, 280755029
Reasons For Failure
There Is No Fixed Replacement Interval; The Unit Usually Fails Due To Electrical Wear Or Environmental Damage. Common causes include internal wear of the potentiometer track, contamination from dust or moisture, corrosion of connector terminals, damaged wiring harnesses, or mechanical shock to the pedal assembly. Repeated exposure to damp conditions or spilled fluids can accelerate degradation of the sensor.
Notes For Mechanics And DIYers
When ordering, using one of the listed product numbers (0280755029, 9647781377, 1601N7) improves the chance of fast identification in catalog searches. Always inspect wiring and connector condition before replacing the unit—sometimes faults are caused by harness problems rather than the potentiometer itself. After fitting, confirm that there are no stored throttle-related errors and that throttle response is linear across pedal travel.
