Steve, thanks for the post. My 99 LS400 just acted up tonight. Check engine light, VSC off warning, drove ok for about 3 minutes then leaving a stop light the throttle had no response. Luckily the 98-00s still have a throttle cable and will crack the throttle open at about 3/4 throttle so I was able to limp out of traffic. Did a restart and the same warnings but the throttle was working again. Pulled the code, P1128 and just now pulled up this post in response.
Error Code P1128
in 90 - 00 Lexus LS400
Posted
Having the same issue. Any fix? Ty