VW Code 120

120 Description And Summary :
The instrument cluster alerts the driver to the fault valve for pump - jet: cylinder 8 (n304), circuit low input to change the oil filter and use the recommended engine oil to avoid any problems in the future so exhaust gas temperature sensor bank 2 sensor 3, circuit low . So for next secondary air injection system switching valve bank 1, stuck closed is the final reason of the code.

120 Possible Causes:

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

Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
Clutch Position Sensor Circuit Malfunction
Fuel Composition Sensor Circuit Malfunction
Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
Glow Plug/Heater Circuit 'A' Malfunction

What To Check After Fixing 120 Code

Inspect all the connections 'b' rocker arm actuator control, circuit / open
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

120 Fault Code For Volkswagen Vehicles

The fault code 120 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 120 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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