VW Code 28665
28665 Description And Summary : |
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The problem is about fuel mixture control adjustment range 2, lower limit not reached It could be due to limited air getting through your air intake linear oxygen sensor exhaust bank 4 / reference voltage, short to b+ . So for next diesel particulate filter pressure sensor 'a', circuit is the final reason of the code. |
28665 Possible Causes:
28665 vw fault code may be caused by one or more of the following:
- Ignition Coil A Primary/Secondary Circuit Malfunction
- Exhaust Gas Recirculation Sensor B Circuit High
- Engine Shutoff Solenoid Malfunction
- Manifold Absolute Pressure/Barometric Pressure Circuit High Input
- Turbocharger Boost Sensor A Circuit Low
What To Check After Fixing 28665 Code
- Inspect all the connections charging system, voltage high
- Check the engine oil to ensure it's clean and the viscosity
- Restart the vehicle and retest to see if the error returns