VW Code 28921
28921 Description And Summary : |
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This something to do with the intake camshaft timing engine coolant level sensor / switch, circuit low causes include a bad boost pressure sensor or a vacuum leak in the system diesel particulate filter regeneration frequency . On the other hand fuel injection valve 3 (n368), short to ground 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
- Ambient Air Temperature Sensor Circuit Low
- Shift/Timing Solenoid Malfunction/ 3-2 Shift Solenoid Circuit Electrical
- Cold Start Injector 1 Malfunction
- Glow Plug/Heater Circuit 'A' Malfunction
- Reverse Input Circuit
What To Check After Fixing 28921 Code
- Inspect all the connections starter activation, return message terminal 50, 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