Same experience with DOC's myself. I had to replace one a couple weeks ago and price has gone crazy on them (what hasn't). Many of the earlier style CES would start to leak from cracks behind the inlet heat shield, but local DPF cleaning service would repair for a good price with good results. The Paccar is nice because it shows target DOC outlet temp and HC dosing fuel quanity so kind of know what it should do as far heat generation during a regen and of course you can see if fuel catalyzing across a cleaned DPF which was the case of the degraded one i did last. The single canister ones like to break the baffle inlet screen but haven't noticed it much post 2020 ones. During the cold snap in January, i did have 2 units log DOC efficiency codes. Tough to do a proper regen when ambient air temp is below 0 F! Thanks Joe, always pick up something from your videos.
If you had any faults that relate to emissions the OBD system counts the time they are active. It will add time when every a fault goes active. Note there are a few faults that do not turn on the dash light you need a scanner or insite to see the faults. Once you drive 3 trips of > 4 hours if NO faults related to emissions went active then the 3 hours is reset to zero by the OBD system. Start by having someone with a scanner hook up. In a couple weeks I will have a video up that talks about a couple devices you can use your phone with to scan faults.
Same experience with DOC's myself. I had to replace one a couple weeks ago and price has gone crazy on them (what hasn't). Many of the earlier style CES would start to leak from cracks behind the inlet heat shield, but local DPF cleaning service would repair for a good price with good results. The Paccar is nice because it shows target DOC outlet temp and HC dosing fuel quanity so kind of know what it should do as far heat generation during a regen and of course you can see if fuel catalyzing across a cleaned DPF which was the case of the degraded one i did last. The single canister ones like to break the baffle inlet screen but haven't noticed it much post 2020 ones. During the cold snap in January, i did have 2 units log DOC efficiency codes. Tough to do a proper regen when ambient air temp is below 0 F! Thanks Joe, always pick up something from your videos.
On my six why does it say derate in 3 hours then does the countdown to de rate when there no codes at all
If you had any faults that relate to emissions the OBD system counts the time they are active. It will add time when every a fault goes active. Note there are a few faults that do not turn on the dash light you need a scanner or insite to see the faults. Once you drive 3 trips of > 4 hours if NO faults related to emissions went active then the 3 hours is reset to zero by the OBD system. Start by having someone with a scanner hook up. In a couple weeks I will have a video up that talks about a couple devices you can use your phone with to scan faults.
What’s the deal with live data for Nox and then “corrected nox”?