2004 Hyundai Sonata Q&A
2004 Hyundai Sonata Question: drive cylce
My car will not pass NY emissions test. The readouts say OBD monitor readiness status: catalyst not ready, oxygen sensor not ready and oxygen sensor heater not ready.I 've been told that the drive cycle needs to be reset, but no one can tell me what that is. Can you please tell me what the correct drive cycle is? - mike p
Hyundai's have really odd drive cycles. A drive cycle is a structured test drive where the computer tests all the of the Emission Components and Systems in a step by step process. You a can go to the Hyundai web site and look up the drive cycle information for your specific car. One of the most reliable ways to do a drive cycle is to let your car sit over night and then start it and let it idle for 2-5 minutes then drive the car in city traffic and then take it out on the freeway and drive it between 55-60 mph as steady as you can for about 7-8 miles, shut it off and then do it again. Not 54 or 61 mph. The computer is really fussy . Leave the A/C off. I do Emissions work in Calif and I do this stuff every day but I find that many areas of our country are not very savy with this stuff. Good Luck! - dandd
My oxygen sensor and catalyst are not running on the monitors resulting in failed smog check. If I install a new oxygen sensor will it pass on the monitor? I heard it still might not, but im not su...