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.
The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 0 V.
| DTC | CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition | |
| P0131 | A/F SENSOR1 (B1) (O2 sensor circuit low voltage bank 1 sensor 1) |
Diagnosis condition | - |
| Signal (terminal) | The A/F signal computed by ECM | ||
| Threshold | The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 0 V | ||
| Diagnosis delay time | - | ||
| P0151 | A/F SENSOR1 (B2) (O2 sensor circuit high voltage bank 2 sensor 1) |
Diagnosis condition | - |
| Signal (terminal) | The A/F signal computed by ECM | ||
| Threshold | The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 0 V | ||
| Diagnosis delay time | - | ||