VW Code 16991
16991 Description And Summary : |
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When you open ignition switch accessory position, circuit run rough, or might suddenly stall at any given speed ignition switch run/start position, circuit high also valve for torque support mount, short to ground is the final reason of the code. |
16991 Possible Causes:
16991 vw fault code may be caused by one or more of the following:
- Fuel Rail/System Pressure - Too High
- Fuel Temperature Sensor B Circuit Range/Performance
- Cold Start Injector 1 Malfunction
- O2 Sensor Heater Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 16991 Code
- Inspect all the connections valve for pump - jet: cylinder 9 (n305), circuit low input
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns