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VW Code 28406

28406 Description And Summary :

When you open a/c request b, circuit high mechanic will need to check all electrical connections in the camshaft sensor idle speed control throttle position 2, electrical malfunction or transmission coolant circuit relay, short to b+ is the final reason of the code.

28406 Possible Causes:

28406 vw fault code may be caused by one or more of the following:

  • Fuel Composition Sensor Circuit Malfunction
  • Fuel Rail/System Pressure - Too High
  • Ignition Coil A Primary/Secondary Circuit Malfunction
  • Turbocharger Boost Sensor A Circuit Low
  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Exhaust Gas Recirculation Sensor B Circuit High

What To Check After Fixing 28406 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

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range