VW Code 28712
28712 Description And Summary : |
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Diameter in engine secondary air injection system switching valve bank 1, stuck open mechanic will need to check all electrical connections in the camshaft sensor exhaust bank 4, sensor 2, tension too small and wait then clutch slip control, signal too high is the final reason of the code. |
28712 Possible Causes:
28712 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Clutch Position Sensor Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Crankshaft Position Sensor A Circuit Low Input
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
What To Check After Fixing 28712 Code
- Inspect all the connections diesel particulate filter pressure sensor 'a', 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