Previa MAF Sensor Issues

My 2009 Toyota Previa with a gasoline engine is showing signs of a bad mass air flow (MAF) meter at 152593 kilometers. I'm seeing higher fuel consumption, engine stalling at idle, a check engine light, and smoke during acceleration. Diagnostics point to the MAF sensor. Any ideas?

4 comment(s)

I had similar symptoms on my Previa. It sounds like your MAF sensor is the culprit. Have you checked the air-fuel ratio? A decline in performance is a telltale sign.

The air-fuel ratio is off. Can you share the steps you took to confirm the sensor failure? I want to see if our experiences line up before I replace it.

I didn't do much troubleshooting beyond seeing the same symptoms you have. Since the MAF sensor is so important and your performance is down, I'd get it checked at a good shop to avoid more problems.

Thanks for the advice. I got it professionally diagnosed, and it was the MAF sensor. Replacement cost 365€. It's running like it should now. Thanks!

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