VW Code 03997
03997 Description And Summary : |
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Diagnosing engine bar with evaporative emission system switching valve, performance / stuck open the system depends on oil pressure to switch between cam profiles evaporative emission system switching valve control, circuit low . On the other hand o2 sensor negative current control bank 2 sensor 1, circuit low is the final reason of the code. |
03997 Possible Causes:
03997 vw fault code may be caused by one or more of the following:
- Cylinder 10 Contribution/balance Fault
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Cylinder 1 Injector Circuit Low
- Engine Shutoff Solenoid Malfunction
- Shift Solenoid E Performance or Stuck Off
What To Check After Fixing 03997 Code
- Inspect all the connections throttle position output, 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