2010 Jeep Wrangler "failed nox emission" Questions

car code p0404 404, its under warantty the 8 year smog. this is EGR failure. and is NOX smog rules. and is in warranty. all cars . for 8 years.80k or 15/150k, depend on car. but whichever first occurs

...failed everytime on nox only, my numbers dropped a little everytime with repairs until i put the new egr valve on then my numbers shot up higher then they were in the first place and now i'm not sure ...

failed emissions....high nox 25 test 15 test hc 7 9 co .02 .13 no 1354 172 fails emissions test on the 25 test. allowable nox is 712 but i'm almost double. initially it had failed on both tests with ...

...failed twice with readings with very high emissions in each category. I replaced the Catalytc Converter. It passes with the very best readings in all catagories, but FAILS IN ONE: the failing is with ...

Failed emissions test again,nox is high and Co's are too,what are the air/fuel settings and timing specs. Failed emissions test again,nox is high and Co's are too,what are the air/fuel ...

...failed inspection recently for high NOX emissions. The car seems to run OK, but I am not sure how to fix this NOX problem. Anybody have a clue? thanks... yes the cadallac converter produces nox ...

...failed 2 emission they say it is a the NOx is to high what would cause that? What causes High NOX EmissionsThousands of technicians have faced the challenge of bringing a particularly stubborn ...

...260E has no EGR valve and CA emission test failed NOX. What's next? All other emission test measured average or better. NOX was 1139 ppm at 15 mph and 918 ppm at 25 mph. It does have an EGR ...

1992 toyota camry fail smog test on nox car fail emission on nox Check or replace O2 sensor; scanned fault codes in order to know aditially what other sensor could be failed.

...emission test, the HC and NO readings are to high. What can I do to pass it. fist i would like you to post the year make and model of the truck along with the HC ppms and NOX ppm it would be very ...