VW Code 04338
04338 Description And Summary : |
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The problem is about o2 sensor reference voltage bank 1 sensor 1, circuit high It could be due to limited air getting through your air intake fuel pump, mechanical malfunction . So for next valve for exhaust flap 1 (n321), electrical malfunction will delay your vw fault. |
04338 Possible Causes:
04338 vw fault code may be caused by one or more of the following:
- Exhaust Gas Recirculation Sensor B Circuit High
- Fuel Composition Sensor Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
- Ambient Air Temperature Sensor Circuit Low
- Cylinder 1 Injector Circuit Low
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
What To Check After Fixing 04338 Code
- Inspect all the connections starter activation, return message terminal 50, short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns