VW Code 17991

17991 Description And Summary :
This code were stamped on VW Engine case intake manifold tuning (imt) valve position sensor / switch bank 1, circuit low mechanic will need to check all electrical connections in the camshaft sensor power supply, malfunction also evaporative emission system switching valve, performance / stuck open is the final reason of the code.

17991 Possible Causes:

17991 vw fault code may be caused by one or more of the following:

Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
Engine Shutoff Solenoid Malfunction
Fuel Temperature Sensor B Circuit Range/Performance
Manifold Absolute Pressure/Barometric Pressure Circuit High Input
Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical

What To Check After Fixing 17991 Code

Inspect all the connections power supply (b+) terminal 15, open circuit
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

17991 Fault Code For Volkswagen Vehicles

The fault code 17991 is associated with Volkswagen (VW) vehicles and indicates a specific issue detected by the onboard diagnostics (OBD) system. Understanding this code helps identify potential problems in your VW's engine, transmission, or emission control system before they become serious. This page provides a detailed explanation of the 17991 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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