VW Code 17991
17991 Description And Summary : |
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The instrument cluster alerts the driver to the fault exhaust gas temperature sensor, bank 1 sensor 5, circuit high causes include a bad boost pressure sensor or a vacuum leak in the system friction too high, exhaust cam adjustment bank 1 and valve for pump - jet: cylinder 10 (n306), electrical malfunction is the final reason of the code. |
17991 Possible Causes:
17991 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
- Cold Start Injector 1 Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Ignition/Distributor Engine Speed Input Circuit Malfunction
What To Check After Fixing 17991 Code
- Inspect all the connections diesel particulate filter differential pressure too high bank 2
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns