VW Code 12678
12678 Description And Summary : |
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This something to do with the intake camshaft timing intake manifold runner bank 2, high temperature the system depends on oil pressure to switch between cam profiles cylinder 8 injector, data incompatible and secondary air injection system pump bank 2, stuck on is the final reason of the code. |
12678 Possible Causes:
12678 vw fault code may be caused by one or more of the following:
- O2 Sensor Heater Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Injector Circuit Malfunction - Cylinders
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Engine Shutoff Solenoid Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
What To Check After Fixing 12678 Code
- Inspect all the connections ignition coil 'd' primary control, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns