sf lexus lover

thank you--Army of One from sf lexus lover

Hi Everyone, Thanks for all the great advice that I have read from the site!!! I have a 92 LS 400 w/ 110,000 miles on it. Baby it all the time. The timing belt broke - really melted!!! I had it replaced along with all the related parts ,tensions, seals etc,. Plus now was the time to change cap and wires. After 50 miles the check engine light came on. It was code 25 - lean fuel mixture. all o2 sensors are fine. Dealer can not figure out the problem?? Could the broken timing belt cause something else to come unglued??? Runs fine except for the check engine light?? Thank You in advance of all of your advice.