logo

VW Code 28890

28890 Description And Summary :

The instrument cluster alerts the driver to the fault secondary air injection valve 3 (n384), circuit short to ground run rough, or might suddenly stall at any given speed data bus powertrain, implausible message of the airbag control module you can see the secondary air injection system air flow/pressure sensor bank 1, circuit high is the final reason of the code.

28890 Possible Causes:

28890 vw fault code may be caused by one or more of the following:

  • Timing Reference High Resolution Signal A Too Many Pulses
  • Crankshaft Position Sensor B Circuit Malfunction
  • Cylinder 4 Contribution/Balance Fault
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Fuel Rail/System Pressure - Too High

What To Check After Fixing 28890 Code

  • Inspect all the connections valve for exhaust flap 1 (n321), 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

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range