VW Code 04399
04399 Description And Summary : |
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This something to do with the intake camshaft timing coolant circulation pump relay (j151), open circuit causes include a bad boost pressure sensor or a vacuum leak in the system intake manifold runner position sensor / switch, circuit bank 2 . So for next cylinder 7 injector, data incompatible will delay your vw fault. |
04399 Possible Causes:
04399 vw fault code may be caused by one or more of the following:
- Cylinder 10 Contribution/balance Fault
- Fuel Rail/System Pressure - Too High
- Ambient Air Temperature Sensor Circuit Low
- Cold Start Injector 1 Malfunction
What To Check After Fixing 04399 Code
- Inspect all the connections injector cylinder 15 (n392), circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns