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 sure. I've tried driving a certain way but that didn't work.
Oxygen sensor failed smog check on 2002 Hyundai Sonata
by Justinj4 in La Mesa, CA on January 26, 2011
2 answers 3 comments
ANSWER by mastertech6371 on January 26, 2011
is the check engine light on?? If not, then you need a drive cylce. Hyundai has a very specific way to drive the car to run the monitors. a shop can do this for you. Roy
COMMENT by Justinj4 on January 26, 2011
Thanks, yeah the check engine light doesn't come on. How much do they charge to do the drive cycle?
COMMENT by CA_gal on February 18, 2011
Hi Justinj4... Good question. I have a Hyundai too. And I'd like to know myself what a fair price would be to do the drive cycle (on a dyno in a shop). I attempted to do it, but it was really hard. You should see what is required. It was insane driving. Only a nut would drive that way. I am so mad at Hyundai for requiring such an insane driving cycle to reset these monitors. I plan to call them (at their headquarters) and give them a piece of my mind! I am so mad at them.
COMMENT by allen36 on January 05, 2013
What exactly were the driving conditions, I have tried everything and one place I went said 4 to $500 to do it but if I get the spec maybe I can do it myself
ANSWER by wentworthauto on February 24, 2011
The only way to get the monitors to run is to drive it. We have had a few cars that were not running the monitors due to the vehicle not warming up quickly enough. The computer needs to have certain criteria met before it will run the test and the engine getting to operating temp quickly is usually a key factor.