Code result
P2105
Throttle Actuator Control System — Forced Engine Shutdown
High severity
What it means
The TAC monitor commanded an engine shutdown because throttle authority can no longer be guaranteed safely. The most aggressive TAC limp mode — used when both throttle position sensors disagree or the motor is uncontrollable.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
TPS1 and TPS2 disagree beyond limit
highOne of the most commonly reported causes for this code — check this first.
Throttle motor not controllable
mediumA plausible cause — test and verify before replacing parts.
Related help
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