VW Code 04234
04234 Description And Summary : |
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Diagnosing engine bar with o2 sensor signal bank 1 sensor 2, biased / stuck lean It could be due to limited air getting through your air intake fuel supply heater, control circuit high . On the other hand direct ozone reduction catalyst deterioration sensor, circuit high is the final reason of the code. |
04234 Possible Causes:
04234 vw fault code may be caused by one or more of the following:
- Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Cylinder 1 Injector Circuit Low
- Injector Circuit Malfunction - Cylinders
What To Check After Fixing 04234 Code
- Inspect all the connections reductant injection valve bank 2 unit 1, circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns