Hi @Hayne (Giles),
I just wanted to thank you for the write-up and this find and for providing the part numbers.
I had the same exact error code and my car was in limp mode (wouldn't accelerate beyond 69 MPH and they hybrid system wouldn't kick in; it would drive in gas-only mode). Lexus quoted me best-case (3-5K) and worst-case (13K) on my 2007 GS 450h with 121,000 miles for the controller pump issue. I used your advice at a friend's tech shop and problem solved!
May God bless you with the best of guidance! THANK YOU! 🙂
