PACCAR MX (2004 Emissions) Fault Code: P1403 Crankcase Air Pressure – Data Erratic, Intermittent or Incorrect, at Ignition On
PACCAR MX (2004 Emissions) Fault Code: P1403 Crankcase Air Pressure – Data Erratic, Intermittent or Incorrect, at Ignition On
SET CONDITIONS:
The PCI ECU (D420) detects that the measured crankcase pressure differs by greater than 5 mbar [0.07 PSI] from the expected pressure.
DIAGNOSTIC CONDITION:
This diagnostic runs continuously when the ignition is on (engine not running).
RESET CONDITION:
This DTC changes to inactive when the fault is no longer detected.
POSSIBLE CAUSES:
1. Engine stalled twice consecutively
2. Crankcase pressure sensor deviation
ADDITIONAL INFORMATION:
The crankcase pressure is monitored with the crankcase pressure sensor (F806) against ambient pressure.
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