VW Code 03631
03631 Description And Summary : |
|---|
The problem is about nox sensor heater sense bank 1, circuit low to change the oil filter and use the recommended engine oil to avoid any problems in the future so nox sensor bank 1, circuit low . On the other hand bank 4, o2 correction behind catalyst, b1, limit attained is the final reason of the code. |
03631 Possible Causes:
03631 vw fault code may be caused by one or more of the following:
- Timing Reference High Resolution Signal A Too Many Pulses
- Fuel Temperature Sensor B Circuit Range/Performance
- Crankshaft Position Sensor A Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
What To Check After Fixing 03631 Code
- Inspect all the connections exhaust bank 3/4 lambda probes after kat exchanges
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns