VW Code 28521
28521 Description And Summary : |
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Diagnosing engine bar with angle sensors 2 for butterfly valve drive 2 (g298), signal too small run rough, or might suddenly stall at any given speed valve for pump - jet: cylinder 10 (n306), range / performance . On the other hand exhaust gas temperature sensor, bank 2 sensor 4, circuit range / performance is the final reason of the code. |
28521 Possible Causes:
28521 vw fault code may be caused by one or more of the following:
- Ambient Air Temperature Sensor Circuit Low
- Ignition/Distributor Engine Speed Input Circuit Malfunction
- Engine Oil Temperature Sensor Malfunction
- Cylinder 1 Injector Circuit Low
- Cold Start Injector 1 Malfunction
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
What To Check After Fixing 28521 Code
- Inspect all the connections torque management feedback signal "b", high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns