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 fluctuates according to fuel feedback control.
| DTC No. | Trouble diagnosis name (Trouble diagnosis content) | DTC detecting condition | Possible cause | |
|---|---|---|---|---|
| P0130 | A/F SENSOR1 (B1) [Air fuel ratio (A/F) sensor 1 circuit] | A) | The A/F signal computed by ECM from the A/F sensor 1 signal is constantly in the range other than approx. 2.2 V. |
|
| B) | The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 2.2 V. | |||