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You answered a question for me last week and I changed the…

Hey nick you answered a...
Hey nick you answered a question for me last week and I changed the nox sensor & still have codes 3712 &3714. They are active&won't clear manually. You did this motor had a campaign on it for the scr. Could this be what's keeping it on? Is the scr covered under warranty or a recall?
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Customer reply replied 1 year ago
73749796 engine serial number
Answered in 12 minutes by:
12/23/2020
Technician: Nich1019, Cummins/Caterpillar Technician replied 1 year ago
Nich1019
Nich1019, Cummins/Caterpillar Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 2,881
Experience: Expert
Verified
Hello, I hope you're doing well. Thank you for requesting me! The 3712 and 3714 should become inactive after idling the engine and initiating a regen. It should only take a few minutes of running a regen for them to go inactive. If they do not become inactive after a regen, the ECM will need to be recalibrated to get the codes to clear. The campaign won't have any effect on this. If these are the only faults active that means your SCR and DEF system are working properly.I would definitely take the truck to a dealer to get the SCR replaced though. While it's there they will have to flash the ECM to get the 3712 and 3714 to clear. Let them know that you had a 3582 and 3543. Worst case scenario they will charge you for an ECM flash. But in most cases they won't.to clarify, this SCR replacement is covered regardless of warranty status.
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Customer reply replied 1 year ago
Great I'll try to do a regen now
Technician: Nich1019, Cummins/Caterpillar Technician replied 1 year ago
Here's the recall. It's actually mandatory that they program the ECM.
Nich1019
Nich1019, Cummins/Caterpillar Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 2,881
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Technician: Nich1019, Cummins/Caterpillar Technician replied 1 year ago

Hello. I'm not familiar with Isuzu, but another expert should pick up that other question for you. Sorry that I can't help you with that.

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