P2107 indicates a malfunction in the Throttle Actuator Control (TAC) Module processor. The PCM has detected that the throttle actuator is not responding to control signals as expected.
Wear or damage inside the throttle body motor can prevent it from reaching the commanded position, triggering the P2107.
Corroded wiring, loose connectors, or sensor failure can produce inconsistent voltage signals that the TAC module cannot process.
Frayed harnesses, corroded pins, or poor grounding can cause intermittent communication errors between the PCM and the throttle actuator.
A defective processor or internal circuitry within the TAC module can misinterpret throttle commands.
Only after ruling out the throttle body, sensors, and wiring should a PCM defect be considered, as it is an uncommon cause of P2107.
In most cases no. The PCM is rarely at fault; the majority of P2107 occurrences stem from the throttle body, sensors, or wiring. Replacing the PCM without confirming those components is usually unnecessary and costly.
The light may reset after clearing, but it will likely return if the underlying fault (e.g., bad throttle actuator) remains unresolved.
Driving is possible, but reduced throttle response and potential stalling can create unsafe conditions, especially during rapid acceleration or hill climbs. Prompt diagnosis is recommended.
Not necessarily. Often the motor, sensor, or wiring can be repaired or replaced individually. Only replace the throttle body if those targeted repairs do not resolve the issue.