VW Code 12402

12402 Description And Summary :
Staring in engine fuel pressure regulator valve (n276), mechanical malfunction causes include a bad boost pressure sensor or a vacuum leak in the system starter relay 2, electrical malfunction in circuit (relay stuck / does not switch) . On the other hand ignition coil cylinder 14, low circuit will delay your vw fault.

12402 Possible Causes:

12402 vw fault code may be caused by one or more of the following:

Turbocharger Boost Sensor A Circuit Low
Ignition Coil A Primary/Secondary Circuit Malfunction
Cylinder 10 Contribution/balance Fault
Shift Solenoid E Performance or Stuck Off
O2 Sensor Heater Circuit Malfunction

What To Check After Fixing 12402 Code

Inspect all the connections nox trap, efficiency below threshold (bank 1)
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

12402 Fault Code For Volkswagen Vehicles

The fault code 12402 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 12402 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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VW 65200 - 65540 Code Range

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