DTC Detection Logic
| DTC No. | Trouble diagnosis name (Trouble diagnosis content) | DTC detecting condition | Possible cause |
|---|---|---|---|
| P0031 | A/F SEN 1 HTR (B1) (Air fuel ratio (A/F) sensor 1 heater control circuit low) | The current amperage in the A/F sensor 1 heater circuit is out of the normal range. (An excessively low voltage signal is sent to ECM through the A/F sensor 1 heater.) |
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| P0032 | A/F SEN 1 HTR (B1) (Air fuel ratio (A/F) sensor 1 heater control circuit high) | The current amperage in the A/F sensor 1 heater circuit is out of the normal range. (An excessively high voltage signal is sent to ECM through the A/F sensor 1 heater.) |
|