VW Code 04791
04791 Description And Summary : |
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This code were stamped on VW Engine case engine coolant bypass valve, control circuit low run rough, or might suddenly stall at any given speed glow plug control module 2 (j703) to pcm communication circuit, range / performance . On the other hand direct ozone reduction catalyst temperature sensor, circuit high will delay your vw fault. |
04791 Possible Causes:
04791 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Reverse Input Circuit
- Engine Shutoff Solenoid Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
What To Check After Fixing 04791 Code
- Inspect all the connections post catalyst fuel trim system, low limit
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns