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VW Code 28440

28440 Description And Summary :

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

VW 001 - 196 Code Range

VW 00000 - 19900 Code Range

VW 28000 - 29900 Code Range

VW 65200 - 65540 Code Range