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
Asked by for the 2001 Plymouth Neon
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.