Quote:
Originally Posted by floydarogers
There are actually two - the oxidation catalyst that is part of the DPF, and the SCR catalyst where the DEF/NOx reduction takes place. The mixer for the SCR has been a problem...
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Yes, the DOC (Diesel Oxidative Catalyst) is the first part of what's inside the DPF canister. There's a gap between it and the DPF (Diesel Particulate Filter) where the 2nd of the 3 EGT probes goes.