VW Code 28921
28921 Description And Summary : |
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This something to do with the intake camshaft timing valve for pump - jet: cylinder 10 (n306), circuit low input causes include a bad boost pressure sensor or a vacuum leak in the system valve for pump - jet: cylinder 12 (n308), circuit low input or accelerator pedal position sensor 2 (g185), signal too low is the final reason of the code. |
28921 Possible Causes:
28921 vw fault code may be caused by one or more of the following:
- Cylinder 1 Injector Circuit Low
- Crankshaft Position Sensor A Circuit Malfunction
- Cylinder 10 Contribution/balance Fault
- Ambient Air Temperature Sensor Circuit Low
- Cylinder 4 Contribution/Balance Fault
- Fuel Composition Sensor Circuit Malfunction
What To Check After Fixing 28921 Code
- Inspect all the connections coolant circulation pump relay (j151), short to b+
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns