On Board Diagnosis Logic
WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
DTC DETECTING CONDITION POSSIBLE CAUSE
| DTC No. | Trouble diagnosis name | DTC detecting condition | Possible cause |
|---|---|---|---|
| P1421 1421 |
Cold start emission reduction strategy monitoring | ECM does not control ignition timing and engine idle speed properly when engine is started with prewarming up condition. |
|