Lexus GS Hybrid MAF Sensor Issue

I'm writing to ask about a potential issue with my 2012 Lexus GS hybrid. I've observed high fuel consumption, the engine sometimes stalls, the check engine light is on, and there's visible smoke during acceleration. The car has 103417 km on it. Initial diagnostics point to a defective MAF sensor. Could a faulty MAF sensor be the cause of these problems?

4 comment(s)

Hey, those symptoms sound rough. I had something similar happen with my old Volvo S60. Check engine light, poor fuel economy, the works. Could definitely be the MAF sensor messing with the air-fuel ratio. Have you checked for any obvious air intake leaks?

Thank you for your input. When you experienced similar issues with your Volvo, did replacing the MAF sensor resolve the problem entirely, or were there other underlying factors? I'm trying to gauge whether a simple sensor replacement will suffice or if a more comprehensive diagnostic assessment is warranted.

Yeah, swapping the MAF sensor fixed it for me. But honestly, given all your symptoms, especially the smoke, I'd get it checked by a professional. Could be other things too. Best to be safe.

Understood. I appreciate the advice. I took it to a local shop, and they confirmed the MAF sensor was defective. The replacement cost came to 365€. Hopefully, this resolves the performance decline and poor fuel economy.

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