Problem Description and Possible Solution
A failure of the Primary O2 sensor heater can cause illumination for the Check Engine Light. Replacing the O2 is required to repair this issue.
Average mileage: 250,000 (250,000–250,000)
1 model year affected: 1999
3 people reported this problem
replace both 02 sensors the cat. throttle body sensor, map sensor, did tune up, vac. line fuel filter
bank one sensor still error out anfter 200 mile or so runs fine