maaaan, code 21 this is gettin old

[manpowermustang]

how do you re-set the ecu? do you just dis cinnect the battery?

 

[giddyup306]

how do you re-set the ecu? do you just dis cinnect the battery?

Disconnect the negative side of the battery for ~10 mins.

 

[Daggar]

I never said it wasn't. I said that a predetermined temperature must be met and implied that it used to ECT sensor to determine it. You made it sound as if it was the only factor. I'm merely stating that it is not.

Ahhh... I see what you mean. After going back and re-reading how I wrote it, I can see how it may have come out that way. My bad.