Code result
P2108
Throttle Actuator Control Module Performance
High severity
What it means
Self-tests within the TAC module fail their performance criteria — for example RAM/ROM checks or analog reference voltages drift. Indicates an aging ECU rather than a wiring fault.
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
ECU internal performance fault
highOne of the most commonly reported causes for this code — check this first.
ECU connector pins corroded
lowLess common, but worth ruling out after the more likely causes.
Module software outdated, reflash may resolve
lowLess common, but worth ruling out after the more likely causes.
Related help
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