DTC Detection Logic
To judge the malfunction, the diagnosis checks that the A/F signal computed by ECM from the A/F sensor 1 signal is not inordinately low.
| DTC No. | CONSULT screen terms (Trouble diagnosis content) | DTC detecting condition | Possible cause |
|---|---|---|---|
| P0131 | A/F SENSOR1 (B1) (O2 sensor circuit low voltage bank 1 sensor 1) |
The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 0 V. |
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