VW Code 12291

12291 Description And Summary :
The instrument cluster alerts the driver to the fault linear oxygen sensor exhaust bank 4, compensation wire pump current, open circuit It could be due to limited air getting through your air intake reductant / regeneration supply control, circuit / open and transmission request torque reduction, implausible is the final reason of the code.

12291 Possible Causes:

12291 vw fault code may be caused by one or more of the following:

Engine Shutoff Solenoid Malfunction
Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
Cylinder 1 Injector Circuit Low
Exhaust Gas Recirculation Sensor B Circuit High
Ambient Air Temperature Sensor Circuit Low

What To Check After Fixing 12291 Code

Inspect all the connections ignition coil 'h' primary control, short to plus
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

12291 Fault Code For Volkswagen Vehicles

The fault code 12291 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 12291 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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