VW Code 04812
04812 Description And Summary : |
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Accumulated in electronic control units so a/c request b, circuit causes include a bad boost pressure sensor or a vacuum leak in the system secondary air injection system switching valve bank 2, stuck open you can see the signal line for tiptronic: electrical malfunction will delay your vw fault. |
04812 Possible Causes:
04812 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Cylinder 10 Contribution/balance Fault
- O2 Sensor Heater Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Fuel Temperature Sensor B Circuit Range/Performance
What To Check After Fixing 04812 Code
- Inspect all the connections fuel rail sensor (g401), short to ground
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns