Description
Control Unit for SENSODRIVE Robotic Gearbox With Paddles Under The Steering Wheel. For Citroën C1, Peugeot 107 And Toyota Aygo From 2012 To 2014.
This ECU Sensodrive is a direct-fit control unit for the robotized transmission used on small city cars from the PSA/Toyota cooperation. It manages gear selection, clutch actuation and paddle-shift inputs to deliver smooth, automated gear changes. Supplied with original product references, it is ideal for professional workshops and experienced DIY mechanics who need a reliable replacement part for Citroën C1, Peugeot 107 and Toyota Aygo models built between 2012 and 2014.
Function And Typical Symptoms
The Sensodrive control unit controls the mechatronic functions of the robotic gearbox: gear engagement, clutch actuation, shift timing and paddle inputs. Common symptoms of a failing unit include intermittent loss of gear selection, gearbox stuck in neutral or limp mode, error codes related to transmission control on the dashboard, jerky or delayed shifts and failure of paddle-shift functionality. Diagnosing should include scanning fault codes and checking wiring and connectors before ECU replacement.
Replacement Procedure
- Disconnect the negative terminal of the battery and wait at least 2 minutes to ensure vehicle systems are de-energised.
- Access the transmission ECU location (usually behind trims under the dashboard or near the gearbox depending on model) and carefully unplug the electrical connectors.
- Remove securing bolts and extract the unit, avoiding contact with the connector pins and electronics.
- Install the replacement unit, secure to the mounting points and reconnect connectors ensuring they snap fully into place.
- Re-connect the battery and clear fault codes with a diagnostic tool. Perform adaptation/coding if required (see Installation Recommendations).
Installation Recommendations
- Always disconnect the battery before removing or fitting the unit and follow the vehicle manufacturer’s safety procedure to avoid damage.
- Inspect wiring harness and connectors for corrosion, pin damage or poor contacts; clean and repair as necessary before fitting a new unit.
- After mechanical fitment, use an appropriate PSA diagnostic tool (DiagBox / Lexia) to read fault codes, clear historic faults and perform required adaptations or calibrations.
- If uncertainty arises during coding or adaptation, have the procedure performed by a qualified technician with PSA-compatible service equipment.
Why The Part Most Often Fails
Failures are commonly caused by water ingress or corrosion of connectors, thermal stress from prolonged heat cycles, or electrical faults such as short circuits and transient voltage spikes. Mechanical wear in the gearbox and related sensors can also produce fault conditions that appear as ECU errors. Regular inspection of seals and connector integrity reduces the risk of premature ECU failure.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: Citroën C1, Peugeot 107, Toyota Aygo (2012–2014)
- Product Codes: 89530-70130, 1609859380
- Additional Numbers: Sensodrive Transmission Control Unit
