sophiadragon1

S80 Water Sensor Faulty Connection

Hi, I'm having an issue with my 2011 Volvo S80 diesel. The check engine light comes on and off, and the diagnostic says it's the water sensor. Also, the engine runs rough sometimes. I'm thinking it might be a bad cable or plug. Anyone else seen this?

The issue with the 2011 Volvo S80 diesel involved a check engine light and rough engine performance, diagnosed as a water sensor problem. The suspected cause was a bad cable or plug connection. The solution was to check the sensor's wiring harness and connector for corrosion or damage, which led to identifying and fixing a bad connection at the water sensor.

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4 comment(s)

Sounds like a faulty water sensor circuit. Check the sensor's wiring harness and connector for corrosion or damage. A multimeter can help verify continuity and voltage at the sensor. What's the mileage?

Thanks! It's got about 222135 km on it. Do you know what voltage I should be seeing at the sensor?

At that mileage, sensor issues aren't uncommon. Unfortunately, without the Volvo-specific wiring diagram, I can't give you exact voltage figures. The sensor or wiring is likely the culprit. I would suggest visiting a workshop.

Thanks for the help. It was a bad connection at the water sensor, like I thought. Cost me 95€ to fix, parts and labor.

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VOLVO

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S80