Details On DTCs
WARNING: This page is about a different variant/trim than selected.
DTC P0140:00 (PCM, SKYACTIV-G, US) DETECTION CONDITION AND POSSIBLE CAUSE
| Description |
HO2S circuit no activity detected |
| Detection condition |
Determination conditions |
- With the estimated temperature of the HO2S element exceeding the specified value, a condition in which the HO2S signal voltage is less than the specified value continues for the specified period.
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| Preconditions |
- Battery voltage: above 11 V
- The following DTCs are not detected:
- HO2S: P0137:00 and P0138:00
- ECT sensor No. 1: P0117:00 and P0118:00
- MAF sensor: P0100:00, P0101:00 and U060F:00
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| Drive cycle |
|
| Self test type |
|
| Sensor used |
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| Fail-safe function |
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| Vehicle status when DTCs are output |
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| Possible cause |
- HO2S connector or terminals malfunction
- PCM connector or terminals malfunction
- Short to ground in HO2S signal circuit
- Open circuit in HO2S signal circuit
- HO2S incorrect installation
- HO2S malfunction
- Exhaust gas leakage from exhaust system (between A/F sensor and HO2S)
- Insufficient engine compression
- HO2S heater malfunction
- PCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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