WeberDriver

Megane exhaust temperature sensor issue

Alright, petrolheads, I've got a head-scratcher. My 2007 Renault Megane (gasoline engine) is throwing a tantrum. Check engine light's on, feels like it's lost half its horses, and I'm suddenly best friends with the fuel pump. Mileage is 76030 km. Suspect it's the exhaust temperature sensor acting up, maybe a leak somewhere causing it to read crazy values? Anyone seen this before?

4 comment(s)

Sounds familiar. I had similar symptoms on my old Volvo, though it was a diesel. Check engine light, sluggish performance. Turned out to be a faulty sensor as well. Was your fuel consumption also affected?

Yeah, fuel consumption has definitely taken a hit. Like, noticeably worse. So, what was the fix on your Volvo? Did they find a leak or was it just a dead sensor?

They smoked out a tiny crack in the exhaust manifold near the sensor. Sensor was probably still okay-ish, but the leak was messing with the readings. Workshop visit, unfortunately, but it sorted the issue out.

Right, a leak... that makes sense. Explains the fluctuating temperatures. Guess I'll bite the bullet and get it checked out properly. Thanks for the insight! It's probably gonna cost me around 265€, but it's better than driving a gas guzzler with a check engine light.

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