Conditions for Setting the DTC
WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
P1516
The ECM detects an unstable throttle position for greater than 1 s.
P2101
- The ECM detects the actual throttle position does not match the predicted throttle position for greater than 1 s.
OR
- The ECM detects the throttle control is driving the throttle in the incorrect direction or exceed the reduced power limit.
P2119
The ECM determines that the throttle blade did not return to the rest position within 1 s.
P2176
The ECM detects that both throttle position sensors were greater than a predetermined voltage during the minimum throttle learn procedure for greater than 2 s.