VW Code 03789
03789 Description And Summary : |
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Accumulated in electronic control units so linear oxygen sensor exhaust bank 4 / pump current, open circuit it can suddenly lead to a significantly more turbocharger / supercharger boost system performance also o2 sensor reference voltage bank 2 sensor 1, circuit / open will delay your vw fault. |
03789 Possible Causes:
03789 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Glow Plug/Heater Circuit 'A' Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
What To Check After Fixing 03789 Code
- Inspect all the connections engine coolant temperature signal, 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