100% Free

No Scanner Needed

Carly logo
Prices

ludwig_loewe1

Citroen Nemo NOx Catalyst Aging and Exhaust Fumes

My 2014 Citroen Nemo (gasoline engine) is throwing a wrench in my plans. Check engine light's on, and the error memory says something about NOx storage catalyst aging. Plus, I think I can smell exhaust fumes more than usual. Anyone else had this?

Summary of the thread

A 2014 Citroen Nemo with a gasoline engine displayed a check engine light, indicating NOx storage catalyst aging, and there was an unusual smell of exhaust fumes. The issue was suspected to be related to a leak in the exhaust system, possibly near the catalytic converter. A diagnostic at a workshop confirmed an exhaust leak, which was repaired, resolving the problem and turning off the check engine light.

Did this summary help you solve your problem?

4 comment(s)

helenasmith9

Sounds familiar. I had similar symptoms with my 2016 Opel Astra, although the error code was slightly different. Do you hear any hissing noises near the exhaust when the engine is running? Could be a leak somewhere.

ludwig_loewe1 (community.author)

Hissing, huh? I'll have to check that tomorrow. Where exactly should I be listening? I'm not exactly a mechanic, haha.

helenasmith9

Around any of the joints in the exhaust system, especially near the catalytic converter. Honestly, though, with those symptoms and that error code, a proper diagnostic at a workshop is probably your best bet. Could be a cracked manifold or something.

ludwig_loewe1 (community.author)

Thanks! You were spot on. Took it to the shop, and they found a leak in the exhaust system. Cost me 265€ to fix, but at least the light's gone! Cheers!

rmh_community_comment_box_header

community_crosslink_scanner_headline

community_crosslink_scanner_intro

community_crosslink_scanner_title

community_crosslink_scanner_price

community_crosslink_rmh_headline

community_crosslink_rmh_intro

community_crosslink_rmh_title

community_crosslink_rmh_subtitle

community_crosslink_rmh_brand

CITROEN

community_crosslink_rmh_model

NEMO