michaelknight11

RCZ check engine light and exhaust smell

Hi, I have a 2011 Peugeot RCZ with a gasoline engine. The check engine light is on and it's running rough. I've noticed an exhaust leak and a strong exhaust smell. Mileage is 181979 km. Any ideas?

A 2011 Peugeot RCZ owner reported a check engine light, rough running, and a strong exhaust smell. The issue was suspected to be related to the exhaust system, possibly a faulty lambda sensor, which was confirmed by a workshop. The defective lambda sensor was replaced, resolving the problem.

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4 comment(s)

Sounds like you might have an exhaust treatment malfunction. I had similar issues with my old Volvo V70 - check engine light, rough running, the works. It turned out to be a faulty lambda sensor. Have you checked that?

Lambda sensor? Where is that located and how would I check it?

It's usually located in the exhaust pipe, before or after the catalytic converter. Honestly, unless you know your way around engines, I'd suggest getting it checked at a reputable workshop. It could be a particulate filter issue or even EGR valve as well, but the symptoms do align with lambda sensor failure.

Thanks, I appreciate the advice. Took it to the workshop, and it was indeed a defective lambda sensor. Cost me 375€ to repair.

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PEUGEOT

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RCZ