2006 Mazda MPV ESFACTORY OEM SERVICE PROCEDURE

DTC P2144: Notes

DTC P2144 [AJ] DETECTION CONDITION AND POSSIBLE CAUSES

DTC P2144 EGR boost sensor solenoid valve circuit low input
DETECTION CONDITION 
  • The PCM monitors the EGR boost sensor solenoid valve control signal. If PCM turns the EGR boost sensor solenoid valve off but voltage still remains low, the PCM determines that the EGR boost sensor solenoid valve circuit has malfunction.

Diagnostic support note 

  • This is a continuous monitor (CCM).
  • The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
  • PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
  • FREEZE FRAME DATA is not available.
  • DTC is not stored in the PCM memory.
POSSIBLE CAUSE 
  • EGR boost sensor solenoid valve malfunction
  • Connector or terminal malfunction
  • Short to ground in wiring between EGR boost sensor solenoid valve terminal B and PCM terminal 93
  • Open circuit in wiring between main relay terminal D and EGR boost sensor solenoid valve terminal A
  • Open circuit in wiring between EGR boost sensor solenoid valve terminal B and PCM terminal 93
  • PCM malfunction
DTC P2144 [AJ] DETECTION CONDITION AND POSSIBLE CAUSES

DTC P2144 EGR boost sensor solenoid valve circuit low input
G04327947Courtesy of MAZDA MOTORS CORP.
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