P2104 on 2006-2010 Ford Explorer — Throttle Actuator Control System - Forced Idle
1 vehicles · 1 makes · $350-$900 repair
Most Reported On
P2104 is an OBD-II diagnostic trouble code meaning “Throttle Actuator Control System - Forced Idle.” This code means the engine computer detected a serious fault in the electronic throttle actuator control (TAC) system and has put the engine into a protective forced-idle (limp) mode. In this mode the throttle plate is held near the idle position regardless of how far you press the accelerator, so the vehicle has little to no acceleration. This is a fail-safe to prevent unintended throttle behavior. Because it severely limits power and can leave the vehicle unable to keep up with traffic, it should be diagnosed and repaired quickly. This code is most commonly reported on 2006-2010 Ford Explorer, with repair costs ranging from $350 to $900.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose P2104, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
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FAQ
What does P2104 mean?
P2104 stands for "Throttle Actuator Control System - Forced Idle." This code means the engine computer detected a serious fault in the electronic throttle actuator control (TAC) system and has put the engine into a protective forced-idle (limp) mode. In this mode the throttle plate is held near the idle position regardless of how far you press the accelerator, so the vehicle has little to no acceleration. This is a fail-safe to prevent unintended throttle behavior. Because it severely limits power and can leave the vehicle unable to keep up with traffic, it should be diagnosed and repaired quickly.
What are the most common causes of P2104?
The most common causes of P2104 are: Faulty throttle body / throttle actuator motor, Faulty accelerator pedal position sensor, Wiring or connector faults in the throttle or pedal circuits, Throttle position sensor disagreement / range fault, Carbon buildup binding the throttle plate, PCM/ECM internal fault, Low system voltage or poor grounds. The specific cause varies by vehicle.
How much does it cost to fix P2104?
Repair costs for P2104 range from $350 to $900, depending on the vehicle and root cause.
Which vehicles are affected by P2104?
Au7o has documented P2104 across 1 vehicle models from 1 manufacturers: Ford.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.