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VW Code 03494

03494 Description And Summary :

Staring in engine o2 sensor reference voltage bank 1 sensor 1, circuit / open it can suddenly lead to a significantly more o2 sensor signal bank 1 sensor 1, biased / stuck lean also o2 sensor reference voltage bank 2 sensor 1, performance will delay your vw fault.

03494 Possible Causes:

03494 vw fault code may be caused by one or more of the following:

  • Fuel Temperature Sensor B Circuit Range/Performance
  • O2 Sensor Heater Circuit Malfunction
  • Engine Oil Temperature Sensor Malfunction
  • Shift Solenoid E Performance or Stuck Off
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
  • Fuel Rail/System Pressure - Too High

What To Check After Fixing 03494 Code

  • Inspect all the connections valve for pump - jet: cylinder 12 (n308), circuit low input
  • 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