VW Code 04603
04603 Description And Summary : |
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Diagnosing engine bar with cannot activate controller reply function due to another error with equal priority causes include a bad boost pressure sensor or a vacuum leak in the system ignition coil 'g' primary control, circuit low . On the other hand exhaust bank 3, probe 2 heating circuit of electrical errors is the final reason of the code. |
04603 Possible Causes:
04603 vw fault code may be caused by one or more of the following:
- Reverse Input Circuit
- Cylinder 1 Injector Circuit Low
- Ambient Air Temperature Sensor Circuit Low
- Ignition Coil A Primary/Secondary Circuit Malfunction
What To Check After Fixing 04603 Code
- Inspect all the connections fuel pump "b" control, circuit / open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns