VW Code 04749
04749 Description And Summary : |
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Staring in engine secondary air injection pump-c-relay (j704), circuit short to ground retarded timing position, the engine might refuse to start pressure control valve 1 (n215), open / short to ground . So for next secondary air injection valve 4 (n385), circuit short to b+ is the final reason of the code. |
04749 Possible Causes:
04749 vw fault code may be caused by one or more of the following:
- Fuel Composition Sensor Circuit Malfunction
- Cold Start Injector 1 Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Cylinder 10 Contribution/balance Fault
- Timing Reference High Resolution Signal A Too Many Pulses
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Clutch Position Sensor Circuit Malfunction
What To Check After Fixing 04749 Code
- Inspect all the connections reductant injection valve bank 2 unit 1, 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