VW Code 17991
17991 Description And Summary : |
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This code were stamped on VW Engine case transmission control unit relay, short to b+ the system depends on oil pressure to switch between cam profiles fuel additive control module requested mil illumination . On the other hand load signal from alternator terminal df, open or short to b+ will delay your vw fault. |
17991 Possible Causes:
17991 vw fault code may be caused by one or more of the following:
- Fuel Rail Pressure Sensor Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Clutch Position Sensor Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 17991 Code
- Inspect all the connections fuel injection valve 4 (n369), short to ground
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns