hannahfeuer1

Lexus LX water sensor malfunction

Hi, I have a 2019 Lexus LX with a diesel engine and I'm experiencing a strange issue. The check engine light keeps coming on, and the error memory shows a water sensor malfunction. I've also noticed the engine running a bit rough. Could a defective cable or plug connection of the component cause these problems?

A 2019 Lexus LX with a diesel engine exhibited a check engine light and rough running, attributed to a water sensor malfunction. The issue was suspected to be caused by a defective cable or plug connection. After taking the vehicle to a workshop, it was confirmed that the cable and plug connection were indeed the problem, and repairing them resolved the issue.

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4 comment(s)

Could be. Are you sure the sensor itself isn't faulty? Did you check the cable and plug for corrosion or damage? A bad connection can definitely throw off sensor readings and cause those symptoms. But a failing sensor shows similar symptoms as well, doesn't it?

I haven't tested the sensor itself yet. How would I go about testing the water sensor to rule that out? Where can I find reliable instructions for car diagnostics?

I don't have the exact instructions for your specific sensor. However, given the symptoms and the error code, and if you're not comfortable testing it yourself, it might be best to take it to a workshop. They can properly diagnose the sensor and wiring.

Thanks for the advice! I took it to a local shop, and you were right – it was the cable and plug connection. The repair cost 95€, and now everything is running smoothly.

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LEXUS

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