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HOMESERVICE MANUALSMAZDA20066 I, 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM L3)DTC P0043NOTES
2006 Mazda 6 i, 4D Sedan, Automatic

DTC P0043: Notes

2006 Mazda 6 i, 4D Sedan, AutomaticSECTION Notes
DTC P0043 DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0043 Rear HO2S heater circuit low input
DETECTION CONDITION 
  • The PCM monitors the rear HO2S heater control voltage when the PCM turns the rear HO2S heater off. If the control voltage exceeds 25%  of the battery voltage, the PCM determines that the rear HO2S heater control circuit voltage is low.

Diagnostic support note 
  • This is a continuous monitor (HO2S heater).
  • 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.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Rear HO2S heater malfunction
  • Connector or terminal malfunction
  • Short to power supply in wiring harness between rear HO2S terminal D and PCM terminal 2BE
  • PCM malfunction
G04324004Courtesy of MAZDA MOTORS CORP.
RENDER: 1.0x

NO RELATED

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