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oliverlang3

Lexus ES check engine light and fuel consumption

I'm having some trouble with my 2023 Lexus ES gasoline. The check engine light keeps popping up, and the car feels like it's lost some oomph. Plus, I'm filling up the tank way more often than usual! It's got about 230672 km on the clock. Any ideas what could be causing this? I'm not really a car guy, so any help is appreciated!

4 comment(s)

felixhartmann1

It sounds like a faulty exhaust temperature sensor, it is a common problem. Have you noticed any unusual noises from the exhaust, or perhaps any smells? A leak in the exhaust system can definitely trigger those symptoms.

oliverlang3 (Author)

I haven't really noticed any strange noises or smells specifically, but where exactly is that sensor located? And is it something that's easy to check myself, or am I better off taking it to a professional?

felixhartmann1

The exhaust temperature sensor is usually located in the exhaust system, near the catalytic converter. Given the symptoms and mileage, and if you are not a car guy, I'd advise taking it to a trusted workshop. It sounds like a leak in the exhaust system. They will be able to confirm the issue and provide an accurate diagnosis. Continuing to drive with a faulty sensor can damage other components.

oliverlang3 (Author)

Thanks a lot for the advice! I took it to the shop, and you were spot on. It was indeed the exhaust temperature sensor, caused by a small leak. They replaced the sensor and fixed the leak. Cost me about 265€, but at least the car is running smoothly again. Really appreciate the help!

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