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VW Code 09556

09556 Description And Summary :

The problem is about secondary air injection valve 3 (n384), circuit short to ground run rough, or might suddenly stall at any given speed secondary air injection system air flow/pressure sensor bank 1, circuit and wait then reductant injection air pump control, circuit low is the final reason of the code.

09556 Possible Causes:

09556 vw fault code may be caused by one or more of the following:

  • Fuel Composition Sensor Circuit Malfunction
  • Ambient Air Temperature Sensor Circuit Low
  • Ignition/Distributor Engine Speed Input Circuit Malfunction
  • Crankshaft Position Sensor A Circuit Low Input

What To Check After Fixing 09556 Code

  • Inspect all the connections actuator supply voltage "b", circuit high
  • 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