Ok guys need help bad! 01 Avalon 120k miles. Check engine light is on and abs light. PO500 speed sensor A is the trouble code. No speedometer and trany is shifting weird. First I changed the speed sensor on top of tranny. No luck. Next battery tested bad so I replaced it. No luck. Next I put a multimeter on all 4 abs wheel sensors and spun to check for output voltage and it looked good. Last I checked the plug to the tranny speed sensor for a good ground and it looks good. One mechanic suggested the combination meter could be bad. Wanted to get some advice here before pulling the dash and all.