VW Code 12878
12878 Description And Summary : |
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Diagnosing engine bar with data bus powertrain, no communication causes include a bad boost pressure sensor or a vacuum leak in the system injector control pressure, erratic or change secondary air injection system switching valve bank 2, stuck open will delay your vw fault. |
12878 Possible Causes:
12878 vw fault code may be caused by one or more of the following:
- Clutch Position Sensor Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Exhaust Gas Recirculation Sensor B Circuit High
- Crankshaft Position Sensor B Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Reverse Input Circuit
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
What To Check After Fixing 12878 Code
- Inspect all the connections malfunction indication light (k83), open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns