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HOMESERVICE MANUALSMAZDA20066 I, 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM L3)DTC P2187NOTES
2006 Mazda 6 i, 4D Sedan, Automatic

DTC P2187: Notes

2006 Mazda 6 i, 4D Sedan, AutomaticSECTION Notes
DTC P2187 DETECTION CONDITION AND POSSIBLE CAUSES

DTC P2187 Fuel system too lean at idle
DETECTION CONDITION 
  • PCM monitors short term fuel trim (SHRTFT) and long term fuel trim (LONGFT) during closed loop fuel control at idle. If the LONGFT and the sum total of these fuel trims exceed preprogrammed criteria. PCM determines that fuel system is too lean at idle.

Diagnostic support note 
  • This is a continuous monitor. (Fuel system)
  • MIL illuminates if PCM detects above malfunction condition in two consecutive drive cycles or in one drive cycle while DTC for the same malfunction has been stored in PCM.
  • PENDING CODE is available if PCM detects the above malfunction condition during first drive cycle.
  • FREEZE FRAME DATA is available.
  • DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Misfire
  • Front HO2S deterioration
  • Front HO2S heater malfunction
  • MAF sensor malfunction
  • Pressure regulator (built-in fuel injection pump) malfunction
  • Fuel pump malfunction
  • Fuel filter clogged or restricted
  • Fuel leakage on fuel line from fuel delivery pipe and fuel pump
  • Leakage exhaust system
  • Purge solenoid valve malfunction
  • Purge solenoid hoses improper connection
  • Air suction in intake-air system
  • Insufficient engine compression
  • Variable valve timing control system improper operation
  • PCM malfunction
RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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