P2C99

Throttle Actuator A Control Exceeded Learning Limit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–89 (est.)

Symptoms

Unstable engine idling
Power Loss
Check Engine light comes on
The engine goes into emergency mode
Acceleration problems

Causes

Throttle valve contamination
Throttle actuator malfunction
Problems with wiring or connectors
Throttle Position Sensor Malfunction
ECU software error

How to Fix

Clean throttle body
Check the integrity of wiring and connectors
Check the operation of the throttle valve actuator
Check throttle position sensor
Perform throttle relearn procedure

Related codes

P2101 P2119 P2123