P2111
Throttle Actuator A Control System - Stuck Open
Throttle actuator control
Generic OBD-II
High
What it means
P2111 means the drive-by-wire throttle system detects the throttle plate stuck in an open (or partly open) position, so the ECM can't control airflow normally. It usually forces a reduced-power limp mode to keep things safe. The most common cause is heavy carbon buildup in the throttle body, though the actuator motor or wiring can also be at fault.
High
Can I keep driving? The ECM usually forces a reduced-power limp mode; drive as little as possible and have the throttle body checked before relying on the car.
Common symptoms
What you'll notice
- Check-engine light on
- Reduced power or limp mode (throttle response limited)
- High or unstable idle
- Hesitation and poor throttle response
Common causes
Most likely first
- Heavy carbon buildup in the throttle body keeping the plate from closingLikely
- Failed throttle actuator motor or throttle body assemblyCommon
- Throttle plate or return spring binding mechanicallyCommon
- Wiring or connector faults in the throttle actuator circuitLess often
- PCM/ECM fault (rare)Less often
How to diagnose & fix
Work through it in order
- Read freeze-frame data, then inspect the throttle body and clean carbon from the bore and plate first — the most common fix.
- Check that the throttle plate moves freely and the return spring isn't binding.
- Inspect the throttle actuator connector and wiring for damage or corrosion.
- Test the throttle actuator motor per the service data; replace the throttle body if it fails.
- Clear the code, relearn idle, and recheck. Suspect the PCM only after everything else checks out.
FAQ
Quick answers
Is it safe to drive with P2111?+
Only minimally. A stuck-open throttle means the ECM can't control airflow normally and usually forces a reduced-power limp mode, which is a safety and driveability concern. Get it fixed promptly.
Can I just clear P2111?+
You can, but if the throttle body is carbon-fouled or the actuator is failing it will set again within a drive cycle or two until the underlying fault is repaired.
Related codes
Often seen with P2111
Read & clear P2111 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX