VW Code 04012
04012 Description And Summary : |
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The problem is about direct ozone reduction catalyst, efficiency below threshold mechanic will need to check all electrical connections in the camshaft sensor accelerator pedal position sensor 1 (g79), power supply malfunction and wait then pressure control solenoid 2 (n216), electrical malfunction will delay your vw fault. |
04012 Possible Causes:
04012 vw fault code may be caused by one or more of the following:
- Cold Start Injector 1 Malfunction
- O2 Sensor Heater Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Cylinder 10 Contribution/balance Fault
- Fuel Temperature Sensor B Circuit Range/Performance
What To Check After Fixing 04012 Code
- Inspect all the connections b camshaft position actuator control bank 2, 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