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VW Code 18686

18686 Description And Summary :

The problem is about throttle position output, circuit high the system depends on oil pressure to switch between cam profiles exhaust gas temperature sensor bank 1 sensor 1, circuit range / performance you can see the oxygen (lambda) sensor b1 s1, pump current, open circuit will delay your vw fault.

18686 Possible Causes:

18686 vw fault code may be caused by one or more of the following:

  • Cylinder 4 Contribution/Balance Fault
  • Ignition Coil A Primary/Secondary Circuit Malfunction
  • Exhaust Gas Recirculation Sensor B Circuit High
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent

What To Check After Fixing 18686 Code

  • Inspect all the connections secondary air injection system control 'a', circuit high
  • 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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