Exhaust smell inside 2021 BS Badlands

[Ssabin]

I too had a cracked catalytic converter. The smell was noticeable for a couple months before it got obnoxious/dangerous. Over Thanksgiving, my wife warmed up the BS and the dogs had piled in fear we would leave them, and when I opened the door to load some things, I thought we were trying to kill our dogs.

Took it into the dealership and explained what I knew about this issue after reading this thread. They called back and said I had both a cracked catalyst and a leaky water pump. They replaced both under warranty, and had perhaps my best dealership experience in a long while.

Just drove it home from the dealership and the lack of the exhaust smell was indeed something I noticed!

The only code I had in my PCM was a P04F0, which is either a phantom code, or an unrelated problem. I'm hoping the recall work on the PCM/BCM update might also address the fuel vapor diagnostic, but we'll see. If the P04F0 comes back, I'll have to pick up a purge valve/hose assembly and assume that will resolve it.

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[Smurf007]

I have the same problem on my '21 OBX. Exhaust smell in cabin when idling. I can make it quit by pushing the Recirculate button on the climate control. Don't smell it when moving. I just picked it up from a second dealer. First dealer, where i bought it from said they didn't notice it. Second dealer says they smell it, but find no exhaust leaks. They tried to blame it on my K&N filter oil. I don't know where to turn next. Any ideas?

I had this problem in my 2021 BB Bronco. Ford couldn't figure it out, so they ended up taking my 2021 big ben bronco, and swapping it out with a 2022 BB Bronco. Now I'm having the same problem with this one. I honestly think I'm gonna be getting rid of the Bronco completely. As much as I love the vehicle. This is two Broncos in a row now where I've had exhaust leaks come inside and they don't know what's going on

 

[kshirley47553]

I had this problem in my 2021 BB Bronco. Ford couldn't figure it out, so they ended up taking my 2021 big ben bronco, and swapping it out with a 2022 BB Bronco. Now I'm having the same problem with this one. I honestly think I'm gonna be getting rid of the Bronco completely. As much as I love the vehicle. This is two Broncos in a row now where I've had exhaust leaks come inside and they don't know what's going on

it’s the catalytic converter. They’re trash. Mine went out at 25k. I had to leave it overnight and let them cold start it. Tell them there’s a rattle under the gas pedal when you accelerate - sounds like a pebble in a tin can. I didn’t even realize it was a bad noise until they replaced my cat and the noise is gone. It took me 2 months and 5 trips. Just keep harassing them!

 

[Charlie Horse]

I just bought a 2021 BS Badlands with 30K miles. Beautiful condition and runs great. I love everything about this car … except the occasional smell of exhaust?? that is finding its way into the cabin interior. I’m sure that any stickers or whatever have long ago burned off so I know that’s not the issue. I’m thinking that the catalytic converter may be fouled or there is some kind of exhaust leak. Before I start chasing this thing. I thought I’d check here for advice. I want a clean smelling car!

Hello

I have had this same issue with the exhaust oder within the cabin. The catalytic converter was replaced because of a crack that had developed. Issue resolved.

 

[Charlie Horse]

I had this problem in my 2021 BB Bronco. Ford couldn't figure it out, so they ended up taking my 2021 big ben bronco, and swapping it out with a 2022 BB Bronco. Now I'm having the same problem with this one. I honestly think I'm gonna be getting rid of the Bronco completely. As much as I love the vehicle. This is two Broncos in a row now where I've had exhaust leaks come inside and they don't know what's going on

Hello

I had the same issue with my Big Bend. The catalytic converter was replaced and resolved the issue.

 

[PCCLP]

This seems to be a problem with the Bronco Sport. Taking my '21 Big Bend in, again, on Monday. Second time to the dealer regarding the exhaust smell in the cabin. Hoping for a fix this time.

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