DTC Detection Logic
To judge malfunctions, this diagnosis measures response time of the A/F signal computed by ECM from the A/F sensor 1 signal. The time is compensated by engine operating (speed and load), fuel feedback control constant, and the A/F sensor 1 temperature index. Judgment is based on whether the compensated time (the A/F signal cycling time index) is inordinately long or not.
DTC DETECTING CONDITION CHART
| DTC No. | Trouble diagnosis name | DTC detecting condition | Possible Cause |
|---|---|---|---|
| P014C | Air fuel ratio (A/F) sensor 1 (bank 1) circuit slow response |
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| P014D | |||
| P015A | Air fuel ratio (A/F) sensor 1 (bank 1) circuit delayed response | ||
| P015B |