P2112 on Dodge: How to Diagnose & Fix
Throttle Actuator Control System - Stuck Closed
1 Dodge model · 1 documented issue · $50-$600 repair
P2112 on Dodge by model: symptoms, diagnosis and fix
Darts with the 2.0L and 2.4L engines experience random stalling at idle, particularly when coming to a stop or sitting at traffic lights. The issue stems from a combination of electronic throttle body carbon buildup and PCM software calibration problems. Several TSBs have been issued addressing idle quality.
Common Symptoms
- Engine stalls when coming to a stop
- Rough or fluctuating idle RPM
- Engine dies at traffic lights or in drive-through
- Momentary loss of power steering when engine stalls
- Check engine light may or may not illuminate
How to Fix
Start with a throttle body cleaning using CRC throttle body cleaner — remove the intake hose and clean the butterfly valve and bore. Then visit a dealer for the latest PCM flash update (on the 2.4L, TSB 18-006-15 or 18-023-16, which reprogram the PCM for rough or low idle and idle surge). If stalling persists after both steps, replace the electronic throttle body assembly (Mopar 04891585AC for 2.4L). Perform idle relearn after any throttle body service.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (2)
P2112 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P2112 mean on a Dodge?
P2112 stands for "Throttle Actuator Control System - Stuck Closed." P2112 means the throttle actuator control (electronic throttle) system is stuck in the closed position. On drive-by-wire engines the computer moves the throttle plate with an electric motor and confirms its position with sensors; when it commands the throttle open but the plate won't move past closed, this code sets. This usually triggers limp/failsafe mode with greatly reduced power, a poor or surging idle, or a no-acceleration condition. It points to a mechanical or electrical problem in the throttle body or its control circuit. On Dodge it is documented across 1 model: Dart.
What are the most common causes of P2112?
The most common causes of P2112 are: Carbon buildup or debris binding the throttle plate, Failed throttle body actuator motor, Faulty throttle position sensor inside the throttle body, Damaged or corroded throttle body connector/wiring, Loss of power or ground to the throttle body, Seized or mechanically stuck throttle plate, Faulty throttle control circuit in the PCM/ECM. The specific cause varies by vehicle.
How much does it cost to fix P2112 on a Dodge?
Published repair estimates on Dodge range from $50 to $600 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.