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VW Code 28291

28291 Description And Summary :

The problem is about exhaust bank 4 sensor 1, voltage too low or air leak to change the oil filter and use the recommended engine oil to avoid any problems in the future so injector cylinder 13 (n390), open circuit and wait then relays for coolant additive pump (j496), short to b+ is the final reason of the code.

28291 Possible Causes:

28291 vw fault code may be caused by one or more of the following:

  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Ignition/Distributor Engine Speed Input Circuit Malfunction
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Cylinder 4 Contribution/Balance Fault
  • Cold Start Injector 1 Malfunction
  • Turbocharger Boost Sensor A Circuit Low

What To Check After Fixing 28291 Code

  • Inspect all the connections data bus powertrain, missing messages
  • 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