DTC P1744: Shift Valve E Stuck ON: General Description

Shift valve E is in the control circuit of the transmission. It is controlled by pressure from shift solenoid valve B, and it is locked by the line pressure. It switches off when shift solenoid valve B turns off and shift solenoid valve A turns on. The powertrain control module (PCM) monitors the input shaft (mainshaft) speed and the output shaft (countershaft) speed at the gear change determined by the shift schedule. When an improper gear ratio output is compared to the predetermined gear change mode, the PCM detects a shift valve E ON failure and stores a DTC.