If hydrogen is available in the exhaust, the TWC/TWNSC may also create ammonia, which reduces the expected quantity of urea injection; It doesn't detect and provide an inform in every condition. It really is the motive force's accountability to remain alert all the time. See Owner’s Handbook for further more https://waterforfuel01951.blogginaway.com/26798924/helping-the-others-realize-the-advantages-of-hydrogen-auto