VW Code 28440
28440 Description And Summary : |
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This something to do with the intake camshaft timing throttle/fuel inhibit, circuit range / performance causes include a bad boost pressure sensor or a vacuum leak in the system butterfly valve control unit 2 (j544), of mechanical errors . So for next exhaust bank 1 sensor 1 oxygen sensor signal, voltage too low during deceleration is the final reason of the code. |
28440 Possible Causes:
28440 vw fault code may be caused by one or more of the following:
- Injection lump Fuel Metering Control 'B' High (Cam/Rotor/Injector)
- Crankshaft Position Sensor B Circuit Malfunction
- Timing Reference High Resolution Signal A Too Many Pulses
- Cylinder 4 Contribution/Balance Fault
- Engine Shutoff Solenoid Malfunction
- Turbocharger Boost Sensor A Circuit Low
What To Check After Fixing 28440 Code
- Inspect all the connections exhaust gas temperature sensor, bank 2 sensor 4, circuit 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