christianlion2
Seat Ibiza Diesel Water Sensor Issue
Summary of the thread
A Seat Ibiza diesel engine from 2007 exhibited rough running and a lit malfunction indicator lamp, suspected to be due to a faulty water sensor. The issue was potentially caused by a defective cable or plug connection. A similar problem was resolved by inspecting and replacing the connector near the fuel filter, which was found to have corrosion. After replacing the corroded connection, the malfunction indicator turned off, and the engine ran smoothly again.
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4 comment(s)
christianlion2 (community.author)
Thank you for your suggestion. Could you please elaborate on the location of the water sensor and the specific wiring you inspected?
charleshahn37
The water sensor is typically located near the fuel filter. In my case, the electrical fault was indeed within the connector itself. Replacement of the connector resolved the issue. Considering the symptoms you described, a professional workshop visit might be worthwhile.
christianlion2 (community.author)
I appreciate the insight. Following your advice, I performed car diagnostics and the error memory indicated a water sensor malfunction. Upon inspection, the cable connection exhibited signs of corrosion. After replacement, the issue seems resolved. The malfunction indicator is off, and the engine is running smoothly again. Total repair cost amounted to 95€.
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SEAT
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IBIZA
charleshahn37
I have encountered similar symptoms with my Ibiza. Check the wiring harness and connector for the water sensor. An electrical fault in that area is a plausible cause.