Error Code P0666 in Skoda Superb 1.8 TSI Petrol: How to Fix Internal Temperature Sensor Circuit Fault
I own a Skoda Superb 1.8 TSI petrol model. After removing the engine completely for repair, I reinstalled it and attempted to start the car. However, the vehicle now displays error code P0666 — indicating an issue with the internal temperature sensor circuit. The fault is detected during startup. I've consulted several workshops, and they suggest that online coding or a specific diagnostic reset might be required to resolve this issue. Can anyone provide guidance on how to fix this error or successfully start the car after engine reinstallation? Is online coding truly necessary, or are there alternative troubleshooting steps available?
The Skoda Superb 1.8 TSI is a common model with known issues related to sensor circuits. While this vehicle may not be widely available in your region, the P0666 fault can often be resolved through proper diagnostic checks and resetting of the engine control unit (ECU). It's recommended to verify wiring connections and ensure that the temperature sensor is correctly seated and functioning before attempting online coding or ECU reset. Some workshops do offer such services; however, a hands-on inspection by a qualified technician is advised for accurate diagnosis.