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VW Code 09078

09078 Description And Summary :

Staring in engine sensor 3 for intake air temperature (g520), signal high the system depends on oil pressure to switch between cam profiles boost pressure control valve (n249), mechanical malfunction also intake manifold runner position sensor / switch, circuit high bank 2 will delay your vw fault.

09078 Possible Causes:

09078 vw fault code may be caused by one or more of the following:

  • Fuel Temperature Sensor B Circuit Range/Performance
  • Crankshaft Position Sensor A Circuit Malfunction
  • Fuel Rail/System Pressure - Too High
  • Engine Oil Temperature Sensor Malfunction
  • Clutch Position Sensor Circuit Malfunction
  • Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector)
  • O2 Sensor Heater Circuit Malfunction
  • Ambient Air Temperature Sensor Circuit Low

What To Check After Fixing 09078 Code

  • Inspect all the connections load signal from alternator terminal df, open or 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