Diagnostic Aids
WARNING: This page is about a different car, the 2000 Pontiac Firebird, 2000 Chevrolet Corvette, and 2000 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
Inspect throttle blade for being broken, bent or missing. Inspect TP sensor for proper installation (a misaligned sensor will set this DTC)