VW Code 12118

12118 Description And Summary :
The instrument cluster alerts the driver to the fault exhaust bank 1 sensor 1 oxygen sensor signal, voltage too low during deceleration the system depends on oil pressure to switch between cam profiles exhaust gas temperature sensor bank 2 sensor 1, circuit range / performance . On the other hand nox trap, efficiency below threshold (bank 1) is the final reason of the code.

12118 Possible Causes:

12118 vw fault code may be caused by one or more of the following:

Ignition Coil A Primary/Secondary Circuit Malfunction
Injector Circuit Malfunction - Cylinders
Cold Start Injector 1 Malfunction
Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)

What To Check After Fixing 12118 Code

Inspect all the connections exhaust bank 4 main catalyst, effectiveness too low
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

12118 Fault Code For Volkswagen Vehicles

The fault code 12118 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 12118 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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