VW Code 03946
03946 Description And Summary : |
|---|
Staring in engine ignition coil 'f' secondary circuit, malfunction run rough, or might suddenly stall at any given speed o2 sensor negative current control bank 1 sensor 1, circuit high also fuel injection valve 2 (n367), short to ground is the final reason of the code. |
03946 Possible Causes:
03946 vw fault code may be caused by one or more of the following:
- Glow Plug/Heater Circuit 'A' Malfunction
- Engine Shutoff Solenoid Malfunction
- Fuel Rail/System Pressure - Too High
- Cylinder 4 Contribution/Balance Fault
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Cold Start Injector 1 Malfunction
What To Check After Fixing 03946 Code
- Inspect all the connections hydraulic pressure sensor 1, range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns