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VW Code 18771

18771 Description And Summary :

This code were stamped on VW Engine case starter relay 1, electrical malfunction in circuit (relay stuck / does not switch) mechanic will need to check all electrical connections in the camshaft sensor o2 sensor signal bank 1 sensor 2, biased / stuck lean or fuel level sensor 2, circuit low voltage will delay your vw fault.

18771 Possible Causes:

18771 vw fault code may be caused by one or more of the following:

  • Engine Oil Temperature Sensor Malfunction
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Cold Start Injector 1 Malfunction
  • Turbocharger Boost Sensor A Circuit Low
  • Crankshaft Position Sensor A Circuit Malfunction
  • Ignition Coil A Primary/Secondary Circuit Malfunction
  • Cylinder 1 Injector Circuit Low
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input

What To Check After Fixing 18771 Code

  • Inspect all the connections nox sensor heater sense bank 2, circuit
  • 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

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