DTC Detection Logic

WARNING: This page is about a different car, the 2013 Infiniti FX37. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If DTC P1239 or P2135 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643. Refer to "DTC LOGIC ".

DTC No.	Trouble diagnosis name	DTC detecting condition	Possible cause
P1239	Throttle position sensor (bank 2) circuit range/performance	Rationally incorrect voltage is sent to ECM compared with the signals from TP sensor 1 and TP sensor 2.	Harness or connector (TP sensor 1 or 2 circuit is open or shorted.) Electric throttle control actuator (TP sensor 1 or 2)
P2135	Throttle position sensor (bank 1) circuit range/performance