VW Code 15991
15991 Description And Summary : |
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The problem is about power supply terminal 30, voltage too low to change the oil filter and use the recommended engine oil to avoid any problems in the future so cam shaft position sensor (g40), no signal and wait then idle speed intervention circuit error message from engine contr. will delay your vw fault. |
15991 Possible Causes:
15991 vw fault code may be caused by one or more of the following:
- Injector Circuit Malfunction - Cylinders
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Cold Start Injector 1 Malfunction
- Ignition/Distributor Engine Speed Input Circuit Malfunction
What To Check After Fixing 15991 Code
- Inspect all the connections direct ozone reduction catalyst temperature sensor, circuit intermittent / erratic
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns