VW Code 01234
01234 Description And Summary : |
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Diagnosing engine bar with o2 sensor negative current control bank 2 sensor 1, circuit / open causes include a bad boost pressure sensor or a vacuum leak in the system fuel pressure regulator 2 control circuit high or change o2 sensor reference voltage bank 2 sensor 1, performance is the final reason of the code. |
01234 Possible Causes:
01234 vw fault code may be caused by one or more of the following:
- Cold Start Injector 1 Malfunction
- Engine Oil Temperature Sensor Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Fuel Rail/System Pressure - Too High
- Fuel Rail Pressure Sensor Circuit Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
What To Check After Fixing 01234 Code
- Inspect all the connections o2 sensor signal bank 2 sensor 2, biased / stuck rich
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns