Buick Encore experiences limp mode at 80 mph, possibly due to low boost and intake crack on Buick Encore

Some Buick Encore owners report experiencing limp mode activation at high speeds, such as 80 mph, due to various issues including low boost and intake cracks. These problems may stem from restricted fuel flow or malfunctioning speed sensors, which can trigger limp mode as noted by mechanics. Additionally, issues with the Mass Air Flow (MAF) sensor are common culprits, leading to symptoms like rough idle, lack of power, and stalling. While limp mode is designed to allow safe driving to a repair shop, it poses safety risks due to reduced speed capabilities and should not be used for prolonged periods. Owners experiencing these symptoms are advised to consult a qualified mechanic for proper diagnosis and resolution.