VW Code 06621
06621 Description And Summary : |
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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