VW Code 04939
04939 Description And Summary : |
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The problem is about injector control pressure regulator, circuit low mechanic will need to check all electrical connections in the camshaft sensor valve for pump - jet: cylinder 7 (n303), regulation range exceeded also reductant injection air pressure sensor 'a', circuit low will delay your vw fault. |
04939 Possible Causes:
04939 vw fault code may be caused by one or more of the following:
- Engine Shutoff Solenoid Malfunction
- Clutch Position Sensor Circuit Malfunction
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
What To Check After Fixing 04939 Code
- Inspect all the connections fuel rail sensor (g401), short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns