Tic Wilson sent the statement below to post on the forum.
2005 Beaver Monterey with Cat engine. I looked for the serial number, but evidently don't know where to find it. Model # ? 9DG02150.
I have been getting yellow check engine lights intermittently. The flash code is 25. I took the coach into Peterson Cat in Redmond, they said the software was down two levels, so flashed the ECM with the latest software for the engine.
The problem continues. Yellow check light flashes for a short time then goes out. This has happened while under load crossing mountain passes, while coming down steep grades while using the engine brake, and on the flat and level while cruising at 55mph. Usually occurs after about an hour of driving. We seldom travel more than two hours a day.
I am currently parked in Portland, OR for the next week. Appreciate any guidance.
Tic Wilson