DTC Detection Logic
WARNING: This page is about a different car, the 2011 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- If DTC P1423 or P1424 is displayed with other DTC, first perform the trouble diagnosis for other DTC.
DTC DETECTION LOGIC
| DTC No. | Trouble diagnosis name (Trouble diagnosis content) | DTC detecting condition | Possible cause |
|---|---|---|---|
| P1423 | COLD START CONTROL (Cold start emission reduction strategy monitoring) | ECM does not control fuel injection timing properly when engine is started with the engine cold. | ECM |
| P1424 | COLD START CONTROL (Cold start emission reduction strategy monitoring) | ECM does not control fuel injection quantity properly when engine is started with with the engine cold. |