VW Code 17978

17978 Description And Summary :
Diameter in engine pressure control solenoid 2 (n216), short to b+ retarded timing position, the engine might refuse to start valve for exhaust flap 2 (n322), electrical malfunction you can see the oxygen (lambda) sensor b1 s1, pump current, open circuit is the final reason of the code.

17978 Possible Causes:

17978 vw fault code may be caused by one or more of the following:

Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
Turbocharger Boost Sensor A Circuit Low
Crankshaft Position Sensor A Circuit Low Input
Cylinder 1 Injector Circuit Low
Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
Clutch Position Sensor Circuit Malfunction
Injector Circuit Malfunction - Cylinders

What To Check After Fixing 17978 Code

Inspect all the connections exhaust gas temperature sensor bank 1 sensor 2, circuit high
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

17978 Fault Code For Volkswagen Vehicles

The fault code 17978 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 17978 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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