Code No. P2453: Exhaust Differential Pressure Sensor Performance


DIAGNOSIS CONTENT



TROUBLE JUDGMENT


Check Conditions
  • In engine after-run, after the engine has come to a stop.
  • Plausibility monitoring of the exhaust differential pressure sensor signal has not been inhibited.
Judgment Criterion
  • The minimum differential pressure after correction with the offset is below the threshold.

DIAGNOSIS CONTENT



TROUBLE JUDGMENT


Check Conditions
  • In engine after-run, after the engine has come to a stop.
  • Plausibility monitoring of the exhaust differential pressure sensor signal has not been inhibited.
Judgment Criterion
  • The amount of the exhaust differential pressure sensor signal is above the threshold.


  • The amount of the difference between the absolute pressure before the DPF and the atmospheric pressure is above the threshold.

PROBABLE CAUSE



  • Failed exhaust differential pressure sensor
  • Failed electrical harness in exhaust differential pressure sensor circuit