VW Code 15939
15939 Description And Summary : |
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Diagnosing engine bar with transmission control unit relay, malfunction retarded timing position, the engine might refuse to start intake manifold tuning valve (bank 1), stuck open or secondary air injection system control 'b', circuit high is the final reason of the code. |
15939 Possible Causes:
15939 vw fault code may be caused by one or more of the following:
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
- Cylinder 1 Injector Circuit Low
- Timing Reference High Resolution Signal A Too Many Pulses
- Cylinder 10 Contribution/balance Fault
What To Check After Fixing 15939 Code
- Inspect all the connections reductant injection valve bank 2 unit 1, circuit low
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns