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Mustang Forums
2011-2014 Mustangs
Engine/Tuning
2013 5.0 GT will not reset O2/Catalyst Emission Monitors
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<blockquote data-quote="DD2000GT" data-source="post: 15351565" data-attributes="member: 4538"><p>I have researched this issue for days, and performed the Ford Drive Cycle a few times - I cannot get my Catalyst, O2, and O2 heater monitors to go to the Ready state. I got the car used, so I am not 100% sure what had been done to it, but I know bolt-on mods are on it. It has a K&N cold air system and box, and Flowmaster after axle mufflers. The rest of the exhaust is stock and the cats/O2 sensors are there. Not sure if there is a tune on it, but doubt it. I can see the downstream O2 sensor voltage on my bluetooth OBDii reader and Torque app, but no upstream O2 sensors (due to it being wideband and Torque does not register this). I have put almost 1,000 miles in stop and go as well as open highway driving (staying under 60 mph as the drive cycles require).</p><p></p><p>The car sit for several months, and when I tried to start it the instrument panel wigged out due to a very low battery that went bad. Not sure if that hurt anything(?) I replaced the battery, but cannot get the damn thing inspected or registered because the last three monitors have shown incomplete for weeks. I am not sure if I need to reset the PCM again by pulling the battery cables and discharging as i would SURE hate to spend weeks again just finding out that did not help. Does the PCM stop trying to perform these tests after a certain period or number of tries requiring a reset?</p><p></p><p>Any other ideas?</p></blockquote><p></p>
[QUOTE="DD2000GT, post: 15351565, member: 4538"] I have researched this issue for days, and performed the Ford Drive Cycle a few times - I cannot get my Catalyst, O2, and O2 heater monitors to go to the Ready state. I got the car used, so I am not 100% sure what had been done to it, but I know bolt-on mods are on it. It has a K&N cold air system and box, and Flowmaster after axle mufflers. The rest of the exhaust is stock and the cats/O2 sensors are there. Not sure if there is a tune on it, but doubt it. I can see the downstream O2 sensor voltage on my bluetooth OBDii reader and Torque app, but no upstream O2 sensors (due to it being wideband and Torque does not register this). I have put almost 1,000 miles in stop and go as well as open highway driving (staying under 60 mph as the drive cycles require). The car sit for several months, and when I tried to start it the instrument panel wigged out due to a very low battery that went bad. Not sure if that hurt anything(?) I replaced the battery, but cannot get the damn thing inspected or registered because the last three monitors have shown incomplete for weeks. I am not sure if I need to reset the PCM again by pulling the battery cables and discharging as i would SURE hate to spend weeks again just finding out that did not help. Does the PCM stop trying to perform these tests after a certain period or number of tries requiring a reset? Any other ideas? [/QUOTE]
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2011-2014 Mustangs
Engine/Tuning
2013 5.0 GT will not reset O2/Catalyst Emission Monitors
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