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HOMESERVICE MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMON-BOARD DIAGNOSTIC [ENGINE CONTROL SYSTEM L3]DTC P0053NOTES
2010 Mazda 5 Sport, 2.3 L, Standard

DTC P0053: Notes

2010 Mazda 5 Sport, 2.3 L, StandardSECTION Notes
DTC P0053 [L3] DETECTION CONDITIONS AND POSSIBLE CAUSES

DTC P0053 A/F sensor heater resistance
DETECTION CONDITION 
  • The PCM monitors the A/F sensor heater resistance when under the A/F sensor heater control. If the resistance is more than 30 ohms, the PCM determines that there is a A/F sensor circuit problem.

Diagnostic support note 
  • This is a intermittent monitor (A/F sensor heater, HO2S heater).
  • 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 (Mode 2/Mode 12) is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • A/F sensor connector or terminals malfunction
  • A/F sensor heater malfunction
  • Short to ground or open circuit in A/F sensor heater power supply circuit
    • Short to ground in wiring harness between main relay terminal C and A/F sensor terminal A
    • ENG BAR2 15 A fuse malfunction
    • Open circuit in wiring harness between main relay terminal C and A/F sensor terminal A
  • Short to ground between A/F sensor terminal E and PCM terminal 2A
  • PCM connector or terminals malfunction
  • Open circuit between A/F sensor terminal E and PCM terminal 2A
  • PCM malfunction
G06760469Courtesy of MAZDA MOTORS CORP.
RENDER: 1.0x

NO RELATED

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