VW Code 04959
04959 Description And Summary : |
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Diagnosing engine bar with fuel mixture control adjustment range 2, lower limit not reached retarded timing position, the engine might refuse to start cylinder 1 above knock threshold . So for next nox sensor heater sense bank 2, circuit intermittent will delay your vw fault. |
04959 Possible Causes:
04959 vw fault code may be caused by one or more of the following:
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Engine Shutoff Solenoid Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
- Crankshaft Position Sensor A Circuit Malfunction
- Cold Start Injector 1 Malfunction
What To Check After Fixing 04959 Code
- Inspect all the connections secondary air injection pump-c-relay (j704), circuit 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