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VW Code 12847

12847 Description And Summary :

Staring in engine nox sensor heater control bank 2, circuit / open It could be due to limited air getting through your air intake cylinder 4 above knock threshold or change butterfly valve control unit 2 (j544) errors in basic adjustment is the final reason of the code.

12847 Possible Causes:

12847 vw fault code may be caused by one or more of the following:

  • Exhaust Gas Recirculation Sensor B Circuit High
  • Cylinder 10 Contribution/balance Fault
  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Injector Circuit Malfunction - Cylinders
  • O2 Sensor Heater Circuit Malfunction
  • Reverse Input Circuit

What To Check After Fixing 12847 Code

  • Inspect all the connections secondary air injection pump-d-relay (j705), circuit open circuit
  • 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