DTC Detection Logic

WARNING: This page is about a different car, the 2012 Infiniti M35h. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

If DTC P2519 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX. Refer to "DTC LOGIC ".
If DTC P2519 is displayed with DTC P31A9, first perform the trouble diagnosis for DTC P31A9. Refer to "DTC LOGIC ".

DTC	Trouble diagnosis name (Trouble diagnosis content)	DTC detecting condition	Possible cause
P2519	A/C REQUEST A (DC/DC converter cooling request signal circuit)	When Li-ion battery controller detects malfunction of DC/DC converter cooling request signal circuit.	Harness or connectors (DC/DC converter circuit is shorted.) DC/DC converter Li-ion battery controller HPCM