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2000 S40 Code P0128 (Coolant thermostat - coolant temp too low) S40 2000

posted by  ftc on  Wed Dec 29 14:00 CST 2004
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My wife gave me a 2000 S40 as a Christmas present. I started to get a check engine light. The code is P0128 coolant thermostat (coolant temperature too low for thermostat range).

Does anyone have an idea of the cause of this code - maybe a bad sensor.

Which one and where in the engine.

I am use to working on my 1993 945T - but it in now gone.

Thanks in advance.

Frank






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