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VW Code 06621

06621 Description And Summary :

The problem is about bank 1, exhaust cam wave position sensor (g300) / crankshaft position sensor (g28), wrong allocation causes include a bad boost pressure sensor or a vacuum leak in the system brake switch circuit, error message from engine contr. also fuel pressure regulator 2 control circuit high will delay your vw fault.

06621 Possible Causes:

06621 vw fault code may be caused by one or more of the following:

  • Cylinder 1 Injector Circuit Low
  • Fuel Rail Pressure Sensor Circuit Malfunction
  • Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Ambient Air Temperature Sensor Circuit Low
  • Cold Start Injector 1 Malfunction

What To Check After Fixing 06621 Code

  • Inspect all the connections exhaust bank 3 oxygen sensor correction behind catalyst, lean control limit 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