2006 Hyundai Tiburon Q&A
2006 Hyundai Tiburon Question: O2 and catalyst monitor not ready
I bought my car 2weeks ago and I still haven't taken delivery on it because they can't get the o2 or catalyst monitor to read ready!! They replaced all 3 catalytic converters and replaced an aftermarket air intake and still can't get them to be ready to pass inspection!! Wth.. What could be the problem?? Any suggestions?? They want to bring it to a hyundai dealer and flash the computer!! Does that seem right?? Very frustrated at this point!! I just need one code to clear!! - Jgrant0202
Hope they're paying for it; Sounds like they need help, Dealer should be able to advise. - ProfessorG
Okay, the catalyst monitor will only pass under specific conditions. These conditions can be produced during what is called an OBDII drive cycle. However, this will not force the catalyst monitor to run if there is a problem with the system. If the vehicle is not displaying any obvious symptoms, the best way to find the cause is through the use of a scan tool though I'm thinking they don't have one. A few things that can prohibit the cat monitor to run are a RICH condition (worn plugs, bad plug wire or coil, leaking injector or one that is not atomizing the fuel), a LEAN condition (inoperative fuel injector, vacuum leak, exhaust leak near one of the O2 sensors or near the cat, bad O2 sensor, stuck EGR valve). Now you said the monitor would not pass, then you said it had a code. A monitor can refuse to run for a long time before the computer will set a code but if a code is set, the monitor will never run. If you have a code, please tell me what it is. I need all the information you have. - Rojo1
i just had a flash done to my computer to try and ready a catalyst and o2 monitor for inspection but even after the download it still reads not ready... do i need to do a cold start for the monitor...