DTC Detection Logic
| DTC No. | Trouble diagnosis name | DTC detecting condition | Possible cause |
|---|---|---|---|
| P0031 | 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.) |
|
| P0032 | 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.) |
|