the reader says its an undefined code but i jus looked it up and it said it was the...P1619 MAP Cooling Control Circuit Signal Low... :help

the reader says its an undefined code but i jus looked it up and it said it was the...P1619 MAP Cooling Control Circuit Signal Low... :help
A quick google search turned up only this:
http://www.bimmerfest.com/forums/showthread.php?t=168277

thanks for the reference... i doubt i can fix it anytime soon though... think its gonna affect it in any way?

thanks for the reference... i doubt i can fix it anytime soon though... think its gonna affect it in any way?
Don't know...

Thermostat replacement time.... The MAP control circuit is the electrical heating element in your thermostat housing. It's nothing that'll make your car overheat or run poorly. It's just a way to electically control the opening of your thermostat. Since it can affect your emmisions, when it malfunctions, it has to set a check engine light - Federal Emission laws and all that.

Please clarify?

The thermostat will open mechanically when the coolant reaches operating temperature, OR can be forced open electrically as you noted above? And, even if the electrical component fails, the thermostat will still open normally when operating temperature is reached?

That's interesting. Under what circumstances might the thermostat be forced to open electrically, even though the coolant isn't up to temp?

It can also be forced to CLOSE electrically. And yes, the mechanical opening of the t-stat will be unaffected by the elecrical part being fried.

Can you elaborate on the "force to CLOSE electrically"?

Way I understand this is that it's a heating coil and it heats up when DME sends a signal, thereby by closing the circuit. Once the coil is heated up the thermostat can open sooner than 88C. Beyond that temperature, the thermostat will stay open regardless and whether the DME sends a signal or not.