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HOMESERVICE MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 590 (ON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM (AJ])DTC P0057NOTES
2008 Mazda 6 s Sport, 4D Hatchback, Standard

DTC P0057: Notes

2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Notes
WARNING: This page is about a different car, the 2007 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0057 [AJ] DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0057 HO2S heater (LR) circuit low
DETECTION CONDITION 
  • The PCM monitors the HO2S heater (LR) control signal at PCM terminal 2AO. If the PCM turns the HO2S heater (LR) off but the HO2S heater (LR) circuit remains low voltage, the PCM determines that the HO2S heater (LR) circuit has a malfunction.

Diagnostic support note 
  • This is a continuous monitor (HO2S heater).
  • 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 PCM memory.
POSSIBLE CAUSE 
  • HO2S heater (LR) malfunction
  • Connector or terminal malfunction
  • Open circuit between ignition switch and HO2S (LR) terminal C
  • Short to ground circuit between HO2S (LR) terminal D and PCM terminal 2AO
  • Open circuit between HO2S (LR) terminal D and PCM terminal 2AO
  • PCM malfunction
G04324175
RENDER: 1.0x

NO RELATED

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