The 1998 Sienna has one speed sensor in each tire (ABS sensors.) These sensors are used by the ABS system, but also to calculate the vehicle speed and for the tire air pressure monitor. If you are getting a P0500 code and your speedometer does not work, your problem could be a faulty speedometer. If one of the speed sensors were bad, the low tire air pressure light would come on. See http://www.fixya.com/cars/t21907247-transmission_speed_sensor
1,876 views
Usually answered in minutes!
×