VW Code 28304
28304 Description And Summary : |
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Accumulated in electronic control units so hc adsorption catalyst efficiency below threshold bank 2 It could be due to limited air getting through your air intake shift lock, short to ground you can see the 'a' rocker arm actuator control, circuit / open will delay your vw fault. |
28304 Possible Causes:
28304 vw fault code may be caused by one or more of the following:
- Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
- O2 Sensor Heater Circuit Malfunction
- Ambient Air Temperature Sensor Circuit Low
- Crankshaft Position Sensor B Circuit Malfunction
What To Check After Fixing 28304 Code
- Inspect all the connections reductant injection valve bank 1 unit 1, circuit high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns