Fans on constantly

watercool

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Hi everyone,

Ive just replaced my engine coolant temperature sensor (the one on the right hand side) of my Audi A3 Tdi (BKD engine)...as I had an irratic idle, dead temp gauge, engine light on and the fault code.... 16502 - Engine Coolant Temp Sensor (G62) Signal too high.

After replacing that (made no difference to anything) the engine fans are constantly running, as soon as I turn the ignition on.

The car was/is losing a small amount of water and i have to top up every few days.

I only have a cheapo code reader and it won't erase any codes.

Please can someone help with what this might mean and what to check?
 
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