2025 Limited 1500 HO with CEL from both Cats

[CobraKai]

Has anybody on here had issues with their catalytic converters throwing check engine lights.i have 5000 miles on my 1500 and it threw codes P0420 and P0430 today after work.. had an issue at stop light yesterday engine sounded rough and wouldn't accelerate, shut engine off, looked under hood issues, nothing leaking. started back up fine and ran fine no CEL at that time. today now has CEL but seems to drive fine... thought I saw others with this issue.. not sure if it was a software issue or bad cats or both? thanks.

 

[mikeru82]

Just make an appointment at your dealership. It could be a software issue or something else. But you’re still under warranty so why not just let them fix it under warranty?

 

[jws1982]

Sounds more like an electronic issue to me too. Sensors, wire harness, or computer issue. I doubt the cats are actually bad.

 

[CobraKai]

Sounds more like an electronic issue to me too. Sensors, wire harness, or computer issue. I doubt the cats are actually bad.

They did some TSB on it, ignition software update which they though fixed it. drove a mile down the road and still in limp mode and CEL cam back on... bringing it back Thursday... hopefully just a bad harness or sensor... but im sure they didn't even look the first time...

 

[CobraKai]

Just make an appointment at your dealership. It could be a software issue or something else. But you’re still under warranty so why not just let them fix it under warranty?

If they could figure out how to fix by all means I would love that! lol. well aware its under warranty and of course I am bringing it to the dealership. came here to ask if others had experienced this issue thats all. I recall seeing at least one other ask about it. sorry to ruffle your feathers over it thought thats what a forum was for...

 

[mikeru82]

If they could figure out how to fix by all means I would love that! lol. well aware its under warranty and of course I am bringing it to the dealership. came here to ask if others had experienced this issue thats all. I recall seeing at least one other ask about it. sorry to ruffle your feathers over it thought thats what a forum was for...

In your first post you never said anything about having taken it in to have it looked at. I just asked a question that I’m sure others were thinking too. People ask for help in forums and others respond. No one can know things you don’t provide the details about. Good luck with your truck.