good evening!!! Jake brake question

[jjoshthomas074]

engine ser# 79147134
cm870 435st
code that comes up every time #2366

i have a engine warning light when activating the jakes!

i got to reading a little in quickserv and noticed on a 2 solenoid system #1 isn't used. does this mean something in the ECM programming is wrong?? Considering im getting this code!!

both jake solenoids ohm 9.5-10
jake harness was just replaced the pass threw connector was getting oil soaked.
5v at all 3 pins at rocker box connector.

Thankyou for your time and input!