VW Code 28004
28004 Description And Summary : |
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Diameter in engine engine coolant temperature sensor 2 (g83), circuit high causes include a bad boost pressure sensor or a vacuum leak in the system bank 2, system too rich at idle . So for next valve for pump - jet: cylinder 9 (n305), regulation range exceeded will delay your vw fault. |
28004 Possible Causes:
28004 vw fault code may be caused by one or more of the following:
- Ambient Air Temperature Sensor Circuit Low
- Timing Reference High Resolution Signal A Too Many Pulses
- Cylinder 4 Contribution/Balance Fault
- Fuel Composition Sensor Circuit Malfunction
- Crankshaft Position Sensor B Circuit Malfunction
- Crankshaft Position Sensor A Circuit Low Input
- Engine Oil Temperature Sensor Malfunction
What To Check After Fixing 28004 Code
- Inspect all the connections mil call-up circuit / transmission control module, range / performance
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns