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VW Code 15439

15439 Description And Summary :

The instrument cluster alerts the driver to the fault oxygen sensor b1 s1: heating circuit regulation at upper limit, upper limit exceeded retarded timing position, the engine might refuse to start engine temperature too low and valve for pump - jet, cylinder 5 (n244), electrical malfunction is the final reason of the code.

15439 Possible Causes:

15439 vw fault code may be caused by one or more of the following:

  • Fuel Composition Sensor Circuit Malfunction
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Cylinder 10 Contribution/balance Fault
  • Crankshaft Position Sensor A Circuit Low Input
  • O2 Sensor Heater Circuit Malfunction
  • Clutch Position Sensor Circuit Malfunction

What To Check After Fixing 15439 Code

  • Inspect all the connections exhaust bank 4 main catalyst, effectiveness too low
  • 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