VW Code 28321
28321 Description And Summary : |
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The problem is about ignition coil cylinder 15, high circuit retarded timing position, the engine might refuse to start exhaust bank 4 main catalyst, effectiveness too low you can see the mil call-up circuit / transmission control module, short to ground will delay your vw fault. |
28321 Possible Causes:
28321 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- Glow Plug/Heater Circuit 'A' Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Exhaust Gas Recirculation Sensor B Circuit High
- Cylinder 10 Contribution/balance Fault
- Ambient Air Temperature Sensor Circuit Low
What To Check After Fixing 28321 Code
- Inspect all the connections crankshaft position signal output, circuit / open
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns