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VW Code 28446

28446 Description And Summary :

Diagnosing engine bar with transmission control unit relay, malfunction causes include a bad boost pressure sensor or a vacuum leak in the system 'b' rocker arm actuator control, circuit low and turbocharger speed sensor, circuit intermittent will delay your vw fault.

28446 Possible Causes:

28446 vw fault code may be caused by one or more of the following:

  • Fuel Rail/System Pressure - Too High
  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
  • Cylinder 4 Contribution/Balance Fault
  • Reverse Input Circuit
  • Cold Start Injector 1 Malfunction
  • Crankshaft Position Sensor A Circuit Low Input
  • Cylinder 1 Injector Circuit Low
  • Cylinder 10 Contribution/balance Fault

What To Check After Fixing 28446 Code

  • Inspect all the connections power supply, voltage high voltage
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

28446 Fault Code For Volkswagen Vehicles

The fault code 28446 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 28446 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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