On Board Diagnosis Logic
To judge the 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 AND POSSIBLE CAUSE
| DTC No. | Trouble diagnosis name | DTC detecting condition | Possible Cause | |
|---|---|---|---|---|
| P0130 0130 (Bank 1) |
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. 2.2V. |
|
| P0150 0150 (Bank 2) |
B) | The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 2.2V. | ||