Engine Power Reduced-Limp Mode?

[G-361959]

Any web board troubleshooting would useless at this point as there could be many things causing a limp home reduced power mode.

But what I can tell you is you have something serious wrong, and even though it might be running OK now, it has the strong possibility to strand you on the road some dark, cold night. Take it in to the dealer now. A reduced power warning most definitely set a diagnostic trouble code that your dealer needs to read in order to fix it. Don't let Pep Boy's or Advanced reset your check engine light (MIL).

Since 1996, and the onset of OBD II, computer controlled cars had a limp home mode. It wasn't until the cool driver information centers started showing up on mainstream cars that we knew we were in a reduced power setting. Years back, the check engine light just came on, and you just sputtered home until you had some figure it out.

When the Encore goes into reduced power mode, it's protecting the catalyst or the engine from major damage. It could be a fault in the transmission, or the throttle actuator, or an engine over temp, or an oil over temp. Or some other sensor that is failing, that when it did, it would cause major engine damage.

Get it checked yesterday, and please tell us what it was.

Mine has done this 3 times and mechanic only resist code. Can a buick mechanic hook it up and see what's wrong if check engine light isn't on?