On Board Diagnosis Logic

The MIL will not light up for this diagnosis.

Fig 1: Throttle Angle VS Output Voltage Graph

Courtesy of NISSAN MOTOR CO., U.S.A.

DTC DETECTING CONDITION AND POSSIBLE CAUSE

DTC No.	Trouble diagnosis name	DTC detecting condition	Possible cause
P1226 1226	Closed throttle position learning performance	Closed throttle position learning is not performed successfully, repeatedly.	Electric throttle control actuator (TP sensor 1 and 2)