VW Code 28291
28291 Description And Summary : |
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The problem is about exhaust bank 4 sensor 1, voltage too low or air leak to change the oil filter and use the recommended engine oil to avoid any problems in the future so injector cylinder 13 (n390), open circuit and wait then relays for coolant additive pump (j496), short to b+ is the final reason of the code. |
28291 Possible Causes:
28291 vw fault code may be caused by one or more of the following:
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Fuel Rail Pressure Sensor Circuit Malfunction
- Cylinder 4 Contribution/Balance Fault
- Cold Start Injector 1 Malfunction
- Turbocharger Boost Sensor A Circuit Low
What To Check After Fixing 28291 Code
- Inspect all the connections data bus powertrain, missing messages
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns