Engine warning light..please help

[finnpoulsen]

The engine yellow/orange warning light in the dashboard on my 2005 1.3 2sz-fe went on today :-(
The car felt normal so I continued driving home. I tried to fasten the gas cap and I also disconnected the negative terminal on the battery to see if the warning light did a reset. It didn't :-(...I noticed that the radiator fan started when I turned the ignition to on (without starting), so i let the engine cool off and gave it another try.The same thing happened, the radiator fan began spinning. It turned off and on with an interval go about a minute, even though the engine was cold. I have a had a minor leak around the water pump for some time, but has not been a problem and I always kept the coolant reservoir full...
Any ideas?
Thanks

[tmontague]

first, find out what the code is. Second, get your WP fixed. The code may be something as simple as a sensor gone bad

[finnpoulsen]

Thanks..let's hope it's a broken sensor


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[colj00]

i believe that your coolant temp sensor has gone bad, its designed in a way that the fan would be on 100% of the time if the sensor failed, instead of 0%.

[finnpoulsen]

Thanks...do you know where the coolant temp sensor is located?