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raphaelhoffmann10

Citroen C2 Exhaust Leak

My 2006 Citroen C2 with a gasoline engine is acting up. Check engine light is on, it's running rough, and there's an exhaust leak. Getting an 'exhaust treatment malfunction' error. Thinking it might be the lambda sensor. Anyone else experienced this?

4 comment(s)

friedhelmmoon17

I had a similar issue with my C2. Rough running and the engine light. Did you check the EGR valve? Could be that too. Is the exhaust pipe itself damaged, or just leaking at a joint?

raphaelhoffmann10 (Author)

Good call on the EGR valve, I'll check it. The exhaust seems to be leaking at a joint. What was your fix, and did you have the same strong exhaust smell?

friedhelmmoon17

Yeah, the smell was awful. Turned out to be a dodgy lambda sensor, like you suspected. Unless you're really confident, I'd get it checked by a workshop. Exhaust leaks can be nasty.

raphaelhoffmann10 (Author)

Thanks for confirming! Lambda sensor it is then! Booked it into the garage; 375€ they quoted me for the fix. Appreciate the help!

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