DTC Decoded: P2106

Ford DTC Code: P2106

Code Meaning: Throttle Actuator Control System - Forced Limited Power

What’s Wrong: The throttle actuator control system is in FMEM mode of force limited power. This DTC indicates that the FMEM action is taking place because of a failure in the ETC related components or module.

Ford throttle actuator

Possible Causes:

  • Throttle actuator control motor is either stuck open or stuck closed
  • The throttle actuator control is faulty
  • Harness for the throttle actuator motor harness is open or has a short
  • There’s a poor electrical connection with the throttle actuator control circuit
  • Damaged PCM

How To Diagnose and Fix Possible Causes

This code has been set as an informational trouble code to tell the vehicle owner that the vehicle has entered into a failure mode due to a problem in the throttle actuator control system. Due to the nature of the part, this is a problem you’ll likely need to visit a certified Ford mechanic to diagnose. However, there are a few things you can check on your own before taking the time to visit a mechanic for help with diagnosis.

Commonly, Ford owners will experience this code as a result of changing rear axle ratios or wheel and tire sizes — if you have recently changed these, this is most likely your problem. In this case, your computer will need to be updated to accommodate for the size changes. This can be done at any certified Ford repair shop.

You can also check a few different things like making sure the spring on your throttle body is in tact and that it’s properly tightened down. Also, check to make sure the throttle is opening and closing all of the way when the accelerator pedal is depressed. Faults could also exist in the MAF, throttle position sensor, the idle air control valve, and various other related sensors. Voltage testing will need to be done to determine where the fault is in the system.