VW Code 03878
03878 Description And Summary : |
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This something to do with the intake camshaft timing exhaust bank 3, probe 1 heating circuit of electrical errors run rough, or might suddenly stall at any given speed relays for pump load air cooling (j536), interruption / short-circuit after mass and actuator supply voltage "b", circuit low is the final reason of the code. |
03878 Possible Causes:
03878 vw fault code may be caused by one or more of the following:
- Cylinder 4 Contribution/Balance Fault
- Crankshaft Position Sensor A Circuit Low Input
- Turbocharger Boost Sensor A Circuit Low
- Clutch Position Sensor Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- O2 Sensor Heater Circuit Malfunction
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 03878 Code
- Inspect all the connections a/c refrigerant distribution valve control, 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