DTC Detection Logic
WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
To judge malfunctions, 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 DETECTION LOGIC CHART
| DTC No. | Trouble diagnosis name | DTC detecting condition | Possible Cause | |
|---|---|---|---|---|
| P0130 | Air fuel ratio (A/F) sensor 1 (bank 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. 2.2 V. |
|
| B) | The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 2.2 V. | |||
| P0150 | Air fuel ratio (A/F) sensor 1 (bank 2) circuit | A) | The A/F signal computed by ECM from the A/F sensor 1 signal is constantly in a range other than approx. 2.2 V. | |
| B) | The A/F signal computed by ECM from the A/F sensor 1 signal is constantly approx. 2.2 V. | |||