VW Code 03678
03678 Description And Summary : |
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Diagnosing engine bar with control module for coolant fan 3 fan activation, short circuit the system depends on oil pressure to switch between cam profiles actuator supply voltage "b", circuit /open also torque management request input signal a, low will delay your vw fault. |
03678 Possible Causes:
03678 vw fault code may be caused by one or more of the following:
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Engine Oil Temperature Sensor Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- O2 Sensor Heater Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
- Crankshaft Position Sensor A Circuit Low Input
- Injector Circuit Malfunction - Cylinders
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 03678 Code
- Inspect all the connections please check dtc memory of adr control module
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns