VW Code 03666
03666 Description And Summary : |
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Accumulated in electronic control units so valve for exhaust flap 1 (n321), short to ground it can suddenly lead to a significantly more nox sensor heater control bank 1, circuit / open also exhaust gas temperature sensor, bank 2 sensor 5, circuit / open will delay your vw fault. |
03666 Possible Causes:
03666 vw fault code may be caused by one or more of the following:
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Injector Circuit Malfunction - Cylinders
- Fuel Temperature Sensor B Circuit Range/Performance
- Glow Plug/Heater Circuit 'A' Malfunction
- Clutch Position Sensor Circuit Malfunction
What To Check After Fixing 03666 Code
- Inspect all the connections control module 1 for cooling fan, excess temperature
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns