Peugeot 206 rough running exhaust leak

My 2005 Peugeot 206, gasoline engine, is throwing up some interesting issues at 116022 km. The check engine light's on, she's running rough, and I'm getting a distinct exhaust leak, accompanied by a rather potent exhaust smell. I'm suspecting a defective lambda sensor, given the symptoms. Anyone else run into this?

4 comment(s)

I had similar on my Peugeot 206, although it was a while ago now. Engine light came on and it was running rough. Have you checked the usual suspects like the DEF fluid or exhaust pipe? Could also be the EGR valve or even the oxygen sensor, though you mentioned the lambda sensor.

Thanks for the reply. When you say 'similar', was yours actually leaking exhaust too, along with the rough running? And did you also get the strong exhaust smell? I've visually checked the exhaust pipe for obvious holes, but nothing so far.

Yeah, I remember a slight exhaust smell and the garage said there was a small leak, nothing major though. Honestly, with all those symptoms, and considering I'm no expert, I'd get it to a workshop if I were you. It's probably best to get it properly diagnosed.

Appreciate the advice. It seems you were spot on. Turns out it was indeed the lambda sensor, plus a small exhaust leak. Cost me 375€ to sort out. Thanks again!

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