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VW Code 12078

12078 Description And Summary :

This something to do with the intake camshaft timing low pressure fuel system sensor (g410), circuit high retarded timing position, the engine might refuse to start throttle/pedal position sensor 'd', minimum stop performance you can see the engine coolant temperature signal, short to ground is the final reason of the code.

12078 Possible Causes:

12078 vw fault code may be caused by one or more of the following:

  • Timing Reference High Resolution Signal A Too Many Pulses
  • Shift Solenoid E Performance or Stuck Off
  • O2 Sensor Heater Circuit Malfunction
  • Ambient Air Temperature Sensor Circuit Low
  • Ignition/Distributor Engine Speed Input Circuit Malfunction
  • Fuel Temperature Sensor B Circuit Range/Performance

What To Check After Fixing 12078 Code

  • Inspect all the connections please check dtc memory of engine ecu
  • 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