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International Automotive Technicians Network
Re: Hino Catalyst code
Posted to HD/Fleet Forum on 4/1/2021

How many miles are on that truck? Standard emissions was to 100,000.

That code means that the after turbo catalyst, or ATC catalyst (The "warmup cat" or "pre-cat") is not making enough heat. It hasn't flagged for efficiency (yet), it might or might not be re... Login to read more.