Code P0776, Transmission will not shift into second gear?

OTTUN

MEMBER
2004 LEXUS ES 330
3.3L
V6
2WD
AUTOMATIC
170,654 MILES

The transmission won't go to second gear and when I used a scan tool, I saw code p0776 solenoid B problem.

Thursday, June 12th, 2025 AT 12:07 AM

1 Reply

JACOBANDNICKOLAS

MECHANIC
110,136 POSTS

Hi,

The code is specific to an issue with pressure control solenoid B (Shift solenoid valve SL2), which is related to the second gear.

The issue may simply be the solenoid, or it could be other things such as a torque converter clutch issue, a problem within the transmission's valve body, and so on.

We need to diagnose the issue before throwing parts at it. If you look below, I have attached the diagnostics and other information related to the issue. Take a look through them and let me know if you are comfortable performing them.

Take care,

Joe

See pics below.

Images (Click to make bigger)