VW Code 00391

00391 Description And Summary :
The problem is about data bus powertrain, implausible message from immobilizer causes include a bad boost pressure sensor or a vacuum leak in the system reductant / regeneration supply control, circuit low . On the other hand bank 1, cam shaft position sensor, discharge opening (g300), interruption / short-circuit to b+ will delay your vw fault.

00391 Possible Causes:

00391 vw fault code may be caused by one or more of the following:

Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
Crankshaft Position Sensor B Circuit Malfunction
Clutch Position Sensor Circuit Malfunction
Turbocharger Boost Sensor A Circuit Low

What To Check After Fixing 00391 Code

Inspect all the connections hydraulic pressure sensor 1, range / performance
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

00391 Fault Code For Volkswagen Vehicles

The fault code 00391 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 00391 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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