On Board Diagnosis Logic
To judge malfunctions, the diagnosis checks that the A/F signal computed by ECM from the air fuel ratio (A/F) sensor 1 signal fluctuates according to fuel feedback control.
DTC DETECTING CONDITION CHART
| DTC No. | Trouble diagnosis name | DTC detecting condition | Possible Cause | |
|---|---|---|---|---|
| P0130 0130 |
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 a range other than approx. 1.5V. |
|
| B) | The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 1.5V. | |||