VW Code 04666
04666 Description And Summary : |
|---|
The problem is about reductant injection valve bank 2 unit 1, circuit / open It could be due to limited air getting through your air intake reductant injection valve bank 1 unit 2, circuit high and wait then glow plug control module 2 (j703) to pcm communication circuit, range / performance will delay your vw fault. |
04666 Possible Causes:
04666 vw fault code may be caused by one or more of the following:
- Reverse Input Circuit
- Ambient Air Temperature Sensor Circuit Low
- Exhaust Gas Recirculation Sensor B Circuit High
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 04666 Code
- Inspect all the connections starter relay 1, electrical malfunction in circuit (relay stuck / does not switch)
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns