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VW Code 04377

04377 Description And Summary :

This code were stamped on VW Engine case low pressure fuel system sensor (g410), circuit intermittent it can suddenly lead to a significantly more turbo/super charger, under-boost condition . On the other hand please check coding of ecus in data bus powertrain will delay your vw fault.

04377 Possible Causes:

04377 vw fault code may be caused by one or more of the following:

  • Cold Start Injector 1 Malfunction
  • Cylinder 4 Contribution/Balance Fault
  • O2 Sensor Heater Circuit Malfunction
  • Fuel Composition Sensor Circuit Malfunction
  • Turbocharger Boost Sensor A Circuit Low

What To Check After Fixing 04377 Code

  • Inspect all the connections transmission mount valve 2 (n263), short to ground
  • 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