Check Engine Light due to vacuum leak in EGR tube on Buick Regal
Problem overview
The exhaust gas recirculation (EGR) tube which connects the EGR valve to the intake manifold may develop an engine vacuum leak, causing the Check Engine Light to illuminate with code P0171 and/or P0174 stored.
24 people reported this problem
1 commentBuick Regal vehicles with this problem
Average mileage: 125,000 miles
(100,000 - 150,000)
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