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VW Code 00643

00643 Description And Summary :

When you open o2 sensor out of range during deceleration bank 2 sensor 1 mechanic will need to check all electrical connections in the camshaft sensor exhaust gas temperature sensor, bank 1 sensor 5, circuit / open you can see the engine torque reduction, fault is the final reason of the code.

00643 Possible Causes:

00643 vw fault code may be caused by one or more of the following:

  • Injector Circuit Malfunction - Cylinders
  • Fuel Rail/System Pressure - Too High
  • Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
  • Cylinder 4 Contribution/Balance Fault

What To Check After Fixing 00643 Code

  • Inspect all the connections intake manifold runner position sensor / switch, circuit low bank 2
  • 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