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VW Code 12034

12034 Description And Summary :

The instrument cluster alerts the driver to the fault linear oxygen sensor exhaust bank 2 / pump current, short to ground the system depends on oil pressure to switch between cam profiles exhaust bank 4 sensor 1 heater circuit, electrical malfunction . On the other hand valve for pump - jet, cylinder 4 (n243), electrical malfunction will delay your vw fault.

12034 Possible Causes:

12034 vw fault code may be caused by one or more of the following:

  • O2 Sensor Heater Circuit Malfunction
  • Engine Oil Temperature Sensor Malfunction
  • Fuel Temperature Sensor B Circuit Range/Performance
  • Injector Circuit Malfunction - Cylinders
  • Timing Reference High Resolution Signal A Too Many Pulses
  • Cold Start Injector 1 Malfunction

What To Check After Fixing 12034 Code

  • Inspect all the connections injector cylinder 15 (n392), circuit 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