Red Check Engine light after coolant change

[Rubatoguy]

I have a 1993 325I that developed a leak in the upper radiator hose.
After changing it out, and refilling the coolant, and bleeding it twice, I am seeing the red "Check Engine Light" Flash intermittently. Even though the coolant gauge registers in the middle, and the control computer check says everything is ok.

Anyone have an idea why this is happening and how to solve it?

thanks,

Todd
'93 325i

[Jeron]

Sporadic check engine light sounds more like an O2 sensor problem. The cooling system should not effect the Check Engine Light.

[Rubatoguy]

Great - thanks for the info!!