VW Code 01391

01391 Description And Summary :
This code were stamped on VW Engine case oxygen (lambda) sensor b2 s1, signal shorted to heater circuit causes include a bad boost pressure sensor or a vacuum leak in the system exhaust gas temperature sensor, bank 1 sensor 5, circuit high and wait then data bus powertrain, implausible message of the steering angle will delay your vw fault.

01391 Possible Causes:

01391 vw fault code may be caused by one or more of the following:

Turbocharger Boost Sensor A Circuit Low
Crankshaft Position Sensor A Circuit Malfunction
O2 Sensor Heater Circuit Malfunction
Timing Reference High Resolution Signal A Too Many Pulses
Exhaust Gas Recirculation Sensor B Circuit High
Fuel Rail/System Pressure - Too High
Injector Circuit Malfunction - Cylinders

What To Check After Fixing 01391 Code

Inspect all the connections linear oxygen sensor exhaust bank 4 / reference voltage, implausible
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

01391 Fault Code For Volkswagen Vehicles

The fault code 01391 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 01391 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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