What Does P2111 Mean?
The PCM has detected that the electronic throttle body is stuck in an open position beyond acceptable limits. This prevents the engine from returning to idle and can cause uncontrolled high RPM situations.
Safety Warning
Vehicle may experience unintended high RPM and inability to decelerate normally, creating significant crash risk. Vehicle should not be driven until repaired.
Common Causes
35%
Carbon buildup or physical obstruction preventing throttle plate from closing
30%
Failed throttle actuator motor or internal throttle body mechanism
20%
Throttle plate binding due to damaged shaft, bushings, or housing
10%
PCM software fault or internal PCM failure causing improper throttle control
5%
Wiring harness damage or connector corrosion at throttle body
Diagnostic Steps
1
Step 1: Perform visual inspection of throttle body for carbon buildup, foreign objects, or physical damage preventing closure
2
Step 2: With ignition off, manually check throttle plate movement for binding or sticking; clean throttle body thoroughly if carbon is present
3
Step 3: Monitor throttle position sensor data with scan tool during key-on engine-off and verify plate returns to 0% closed position
4
Step 4: Perform throttle body relearn/adaptation procedure per manufacturer specifications after cleaning
5
Step 5: Test throttle actuator control motor operation using bi-directional controls; replace throttle body if motor fails to close plate or mechanical binding persists
Estimated Repair Cost
$150 - $800
Parts + labor, varies by vehicle and location
The PCM has detected that the electronic throttle body is stuck in an open position beyond acceptable limits. This prevents the engine from returning to idle and can cause uncontrolled high RPM situations.
The most common cause of P2111 (Throttle Actuator Control System - Stuck Open) is: Carbon buildup or physical obstruction preventing throttle plate from closing
Typical repair costs for P2111 range from $150 to $800, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle may experience unintended high RPM and inability to decelerate normally, creating significant crash risk. Vehicle should not be driven until repaired.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2111 to identify the root cause.
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Quick Info
Category
Powertrain
System
Electronic Throttle Control System
Difficulty
Type
Generic (SAE)
Recommended Tools
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