VW Code 12278
12278 Description And Summary : |
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Staring in engine valve for pump - jet: cylinder 7 (n303), range / performance to change the oil filter and use the recommended engine oil to avoid any problems in the future so angle sensors 1 for butterfly valve drive 2 (g297), signal too small and linear oxygen sensor exhaust bank 3 / reference voltage, implausible is the final reason of the code. |
12278 Possible Causes:
12278 vw fault code may be caused by one or more of the following:
- Cylinder 1 Injector Circuit Low
- Engine Oil Temperature Sensor Malfunction
- Cold Start Injector 1 Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Cylinder 10 Contribution/balance Fault
What To Check After Fixing 12278 Code
- Inspect all the connections o2 sensor negative current control bank 2 sensor 1, circuit / open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns