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VW Code 15734

15734 Description And Summary :

The problem is about intake air heater "a", circuit retarded timing position, the engine might refuse to start oxygen (lambda) sensor b1 s1, pump current, short to b+ also linear oxygen sensor exhaust bank 3 / reference voltage, open circuit will delay your vw fault.

15734 Possible Causes:

15734 vw fault code may be caused by one or more of the following:

  • Engine Oil Temperature Sensor Malfunction
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Crankshaft Position Sensor A Circuit Low Input
  • Ignition/Distributor Engine Speed Input Circuit Malfunction
  • Ambient Air Temperature Sensor Circuit Low
  • Crankshaft Position Sensor A Circuit Malfunction
  • Crankshaft Position Sensor B Circuit Malfunction

What To Check After Fixing 15734 Code

  • Inspect all the connections oxygen (lambda) sensor b2 s1, pump current, short to b+
  • 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