Fortuner Water Sensor Issue

My 2020 Toyota Fortuner, diesel engine, 78416 km, has a water sensor malfunction. The check engine light is on, an error is stored, and the engine runs rough. Diagnostics points to a defective cable or plug connection. Has anyone experienced this? Is there a common fix before I spend 95€ on the repair?

4 comment(s)

I had a similar issue with my Fortuner. Check engine light, rough running, the whole shebang. I'd suggest taking a close look at the sensor itself. Are there any signs of corrosion or damage? It could save you some money on diagnostics.

Are you referring to unplugging the sensor and checking the pins for corrosion, or testing the sensor itself with a multimeter?

Yes, first visually inspect the connector and pins. If those look good, testing the sensor with a multimeter is the next logical step. However, judging by the symptoms and the error code, I would recommend visiting a trusted workshop.

I appreciate the advice. It seems I will need to visit the workshop as suggested. The cable harness to the sensor was indeed defective. The repair was exactly 95€, as initially quoted. Thanks again for pointing me in the right direction.

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