VW Code 28991
28991 Description And Summary : |
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This code were stamped on VW Engine case ignition switch run position, circuit high it can suddenly lead to a significantly more post catalyst fuel trim system, high limit and wait then valve for coolant system circuit, high will delay your vw fault. |
28991 Possible Causes:
28991 vw fault code may be caused by one or more of the following:
- Fuel Rail/System Pressure - Too High
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Fuel Rail Pressure Sensor Circuit Malfunction
- Injector Circuit Malfunction - Cylinders
- Ignition/Distributor Engine Speed Input Circuit Malfunction
What To Check After Fixing 28991 Code
- Inspect all the connections exhaust gas temperature sensor, bank 2 sensor 5, 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