VW Code 16643
16643 Description And Summary : |
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Accumulated in electronic control units so secondary air injection system switching valve bank 1, stuck closed causes include a bad boost pressure sensor or a vacuum leak in the system water in fuel condition . On the other hand vacuum reservoir pressure sensor, circuit high is the final reason of the code. |
16643 Possible Causes:
16643 vw fault code may be caused by one or more of the following:
- Cylinder 1 Injector Circuit Low
- Reverse Input Circuit
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Injector Circuit Malfunction - Cylinders
- Crankshaft Position Sensor A Circuit Malfunction
- Turbocharger Boost Sensor A Circuit Low
- Cylinder 4 Contribution/Balance Fault
What To Check After Fixing 16643 Code
- Inspect all the connections control module defective
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns