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HOMESERVICE MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (AJ]DTC P0456 [AJ]NOTES
2008 Mazda 6 s Sport, 4D Hatchback, Standard

DTC P0456 [AJ]: Notes

2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Notes
DTC P0456 [AJ] DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0456 EVAP control system leak detected (very small leak)
DETECTION CONDITION 
  • The PCM measures the pump load current (EVAP line pressure) when a certain period has passed after the EVAP system is sealed when monitoring condition are met. If the load does not reach the reference load value or a rate of load increase lower than specified within a certain period, the PCM determines that the EVAP system has a very small leak.

    MONITORING CONDITION 

    • Ignition switch OFF
    • IAT: 5-35°C {40-95°F} 
    • Battery voltage: 11 V or above 
    • Atmospheric pressure: 72.2 kPa {542 mmHg, 21.3 inHg} or above 
    • Fuel tank level: 15-85% 

Diagnostic support note 
  • This is an intermittent monitor (EVAP).
  • 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 available.
  • DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • EVAP pipe damaged
  • Purge solenoid valve malfunction
  • EVAP system leak detection pump malfunction
  • Fuel pump unit poor seal
  • EVAP hose damaged or loose
  • Charcoal canister malfunction
  • Fuel cap malfunction
  • Fuel tank malfunction
  • PCM malfunction
RENDER: 1.0x

NO RELATED

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