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VW Code 01781

01781 Description And Summary :

The problem is about synchronisation line causes include a bad boost pressure sensor or a vacuum leak in the system exhaust gas temperature sensor 2 bank 1 (g448), range / performance and wait then o2 sensor signal bank 1 sensor 3, biased / stuck lean is the final reason of the code.

01781 Possible Causes:

01781 vw fault code may be caused by one or more of the following:

  • Crankshaft Position Sensor A Circuit Low Input
  • Engine Shutoff Solenoid Malfunction
  • Fuel Rail/System Pressure - Too High
  • Reverse Input Circuit

What To Check After Fixing 01781 Code

  • Inspect all the connections valve for pump - jet: cylinder 7 (n303), regulation range exceeded
  • 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