VW Code 12004

12004 Description And Summary :
The problem is about turbocharger speed sensor, circuit high to change the oil filter and use the recommended engine oil to avoid any problems in the future so reductant temperature sensor, circuit low you can see the intake air heater "a", circuit high will delay your vw fault.

12004 Possible Causes:

12004 vw fault code may be caused by one or more of the following:

Cylinder 4 Contribution/Balance Fault
Ignition/Distributor Engine Speed Input Circuit Malfunction
Reverse Input Circuit
Fuel Rail Pressure Sensor Circuit Malfunction
Manifold Absolute Pressure/Barometric Pressure Circuit High Input

What To Check After Fixing 12004 Code

Inspect all the connections pressure control solenoid 6 (n371) open / short to ground
Check the engine oil to ensure it's clean and the viscosity
Restart the vehicle and retest to see if the error returns

12004 Fault Code For Volkswagen Vehicles

The fault code 12004 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 12004 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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