Buick Envision P2138: Symptoms, Meaning, Causes + Diagnosis
P2138 is a generic powertrain code that can affect your Buick Envision’s “drive by wire” throttle system. It means that your Envision’s “D” and “E” throttle position sensors do not agree with one another on how much far the throttle has been opened. They should have a similar voltage output. In this case, they do … Read more