What causes P1516 code?
The PCM gets the throttle positioning by providing a pulse width modulated voltage to the TAC motor. Error Code P1516 is detected when the PCM has determined an out of range condition between the predicted and the actual position of the throttle.
What does the code P1516 mean?
Error Code P1516 is defined as Throttle Actuator Control Module Throttle Actuator Position Performance. This error code is a manufacturer-specific trouble code, meaning it does not apply to all vehicles makes. Rather, it applies only to specific vehicle makes, such as GM (Chevrolet/GMC), Saturn, etc.
How do I reset my electronic throttle control system?
Resetting your electronic throttle control manually can be a tricky job. First, make sure the accelerator pedal is fully released. Next, turn the ignition on and then turn it off and wait for ten seconds. During these ten seconds, be sure the throttle valve is moving by listening for a sound of operation.
