DTC P281B-13: Pressure Control Solenoid "H" Control Circuit Open [09/2023 - ]: Description
WARNING: This page is about a different car, the 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.
The TCM performs shifting from 1st to 6th gear with ON-OFF combinations of solenoid (SL1, SL2, SL3, SL5, SL6, SC2 and SC6) valve.
As a fail-safe function, the TCM turns the other solenoids ON or OFF if an open circuit or short occurs in any of the solenoid circuits. (If an open circuit or short circuit occurs, the TCM cuts power to the malfunctioning solenoid valve.)
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|
| P281B-13 | Pressure Control Solenoid "H" Control Circuit Open | Solenoid (SL5) valve open circuit for 0.1 seconds or more (1-trip detection logic). |
|
Comes on | Transmission | A | SAE: P281B |