OBDII inspection failed.catalyst not ready; evap. system not ready; O2 sensor not ready; ...............Not supported (items): heated cat., sec.air, A/C system, EGR. All other OBDII items show Ready. I recently replaced the battery and the alternator checks good. No check engine lights. I drove 30 miles at 6- to 70 mph and O2 Sensor shows Ready now.
Question: how do i reset the drive cycle in order to pass emissions? on 2001 Plymouth Neon
by 2001 Neon in Baton Rouge, LA on October 05, 2012
ANSWER by ziptie12 on October 06, 2012
May need several drive-cycles to complete all supported monitors 'readiness' codes. Catalyst and EVAP are usually the most stubborn in my experience. Any time power to the PCM is lost , or the codes are cleared manually , the monitor status is automatically cleared. Patience.