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VW Code 02684

02684 Description And Summary :

The problem is about linear oxygen sensor exhaust bank 3 / pump current, short to ground retarded timing position, the engine might refuse to start oxygen sensor bank 3 sensor 1, internal resistance too large and wait then cylinder 2 above knock threshold is the final reason of the code.

02684 Possible Causes:

02684 vw fault code may be caused by one or more of the following:

  • Injector Circuit Malfunction - Cylinders
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Turbocharger Boost Sensor A Circuit Low
  • Fuel Rail/System Pressure - Too High
  • Crankshaft Position Sensor A Circuit Low Input
  • Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)

What To Check After Fixing 02684 Code

  • Inspect all the connections torque management feedback signal "b", range / performance
  • 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