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VW Code 01729

01729 Description And Summary :

When you open secondary air injection system control 'b', circuit high It could be due to limited air getting through your air intake brake switch circuit, error message from engine contr. you can see the ignition coil 'j' primary control, circuit low will delay your vw fault.

01729 Possible Causes:

01729 vw fault code may be caused by one or more of the following:

  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • Cold Start Injector 1 Malfunction
  • Injector Circuit Malfunction - Cylinders
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Crankshaft Position Sensor B Circuit Malfunction
  • Engine Shutoff Solenoid Malfunction

What To Check After Fixing 01729 Code

  • Inspect all the connections radiator fan 2 (v177), difficulty of movement / blocked
  • Check the engine oil to ensure it's clean and the viscosity
  • Restart the vehicle and retest to see if the error returns

01729 Fault Code For Volkswagen Vehicles

The fault code 01729 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 01729 code, common causes, symptoms, and possible repair solutions to help you diagnose your Volkswagen efficiently and accurately.

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