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HOMESERVICE MANUALSMAZDA20086 S SPORT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 17 (ON-BOARD DIAGNOSTIC (ENGINE CONTROL SYSTEM L3) (2 OF 5))DTC P0030 [L3]EXCEPT CALIFORNIA EMISSION REGULATION APPLICABLE ATX MODELNOTES
2008 Mazda 6 s Sport, 4D Hatchback, Standard

Except California Emission Regulation Applicable ATX Model: Notes

2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Notes
WARNING: This page is about a different variant/trim than selected.
DTC P0030 [L3] DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0030 Front HO2S heater control circuit problem
DETECTION CONDITION 
  • OBD system monitors the output signal voltage from oxygen sensor which is proportion to the element impedance of oxygen sensor.
  • If the output signal voltage isn't between 0.75 V  and 1.5 V  after specified time from engine start, heater performance considered failed.

    MONITORING CONDITIONS 

    • Battery voltage: 10-18 V 
    • Time from engine start is 74 s or more 

Diagnostic support note 
  • This is an intermittent monitor (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 is available.
  • The DTC is stored in the PCM memory.
POSSIBLE CAUSE 
  • Front HO2S heater malfunction
  • Connector or terminal malfunction
  • Short to ground in wiring harness between front HO2S terminal C(1), 2D(2) and PCM terminal 2BG
  • Short to power supply in wiring harness between front HO2S terminal C(1), 2D(2) and PCM terminal 2BG
  • Open circuit in wiring harness between front HO2S terminal 1B(2) and PCM terminal 2AC(2)
  • Open circuit in wiring harness between front HO2S terminal C(1), 2D(2) and PCM terminal 2BG
  • PCM malfunction
G04323995Courtesy of MAZDA MOTORS CORP.
(1) California Emission Regulation Applicable ATX Model
(2) Except for California Emission Regulation Applicable ATX Model
RENDER: 1.0x

NO RELATED

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