Question about 2004 Ford F150

1 Answer

Check Engine Light - Tcode P2106

My Check Engine light came on and registered a Tcode P2106 which stands for Throttle Actuator Control System - Limited Power. At the same time my ABS Light and my Brake warning light came on. Also, my information center reads "Engine Failsafe Mode". The truck runs like garbage, (surges, hessitates, jerky). The truck runs in Open Loop continuesly which I beleive is causing an occasional Rich Code and poor fuel economy. I've checked all the sensor output values and they seem to be in lne with factory specs. I was wandering if the ABS system could be triggering some kind of Limp In Mode causing my Check Enging Light and drivability problems. Suggestions?

Posted by on

  • 1 more comment 
  • jimenez327 Mar 13, 2009

    I Have a 2004 Ford Explorer 4.6L. I have a similar experience.I have Code p2106 and p0102, so i put a new tps [throttle position sensor]on it ,didnt help.I still dont know if i had to calibrate it before installing,if not,does it need a throttle actuator motor??Maf says not getting enough air volume.Still drives in fail safe mode but didnt have the power like it used to. Need Help!!

  • Anonymous May 25, 2009

    I get the same thing on my2004 f150 5.4 with a check engine light on and when i barely release the throttle it sounds like it is going to die out but idles at about 5 or 600 rpm.

  • Anonymous Mar 25, 2014

    Check engine light and the abs light is on



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert whose answer gotĀ voted for 20 times.


    An expert who has answered 20 or more questions within one hour.

  • Expert
  • 186 Answers

Big problem with egr intake passage plugging up need to remove upper intake check passage

Posted on Jul 10, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

3 Answers

The "engine power reduced " light came on on my 2008 cadillac sts. What is going on?

Sounds like a speed sensor problem. Perform an OBDII scan to check for stored fault history.

May 22, 2017 | Cadillac Cars & Trucks

1 Answer

How do i fix acode p2106 on a 2006 suzuki forenza

p2106 is your throttle actuator control/wiring, actuator motor, sensor or engine control modual

Oct 18, 2015 | 2006 Suzuki Forenza

2 Answers

Why is codes p2106 p0401 on?


May 29, 2014 | 2005 Ford Explorer

1 Answer

P2106 P2110 P2135 P1516

Here is what meens those codes:

Throttle Actuator Control System - Forced Limited Power

Throttle Actuator Control System - Forced Limited RPM

Throttle/Pedal Position Sensor/Switch "A"/"B" Voltage Correlation

Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance

I beleive that there is, specifically for chevrolet aveo 2006 a technician service bulletins.

You should have it checked at gm dealer!!!

ask for
TSB Number: SB-08-06-04-004
TSB Number: 08-06-04-023

Jan 27, 2014 | 2006 Chevrolet Aveo

1 Answer

Start and dies, codes p061f, p2106,p2104,p2111

code p2106 refers to throttle actuator control (TAC) system--limited power mode===causes ---wiring---TAC motor---APP sensor---ECM

code o2104 refers to TAQC systems ---forced idle mode===causes wiring---TAC motor--APP sensor--ECM

code p2111 refers to TAC system --actuator stuck open ==causes ---throttle body--throttle valve tight/ sticking

code p2111 also refers to TAC system --circuit malfunction==causes wiring---short to positive--short to ground---TP sensor---ECM

code p2111 also has a 3rd section---brake vacuum---implausible signal===causes---wiring---vacuum sensor--mechanical fault

Dec 21, 2013 | 2005 Ford Crown Victoria

2 Answers

Promblems P0340 P2105 P2106 P2110 P161B???? vehilce has limited power and slows down while driveing due to limited power vehicle has not ever shut off i believe it s the actuator on the throttle...

Diagnostic Test Code (DTC) P0340 is a Camshaft Position Sensor (CMP) fault. This can be caused by several things including faulty CMP sensor wiring, a defective CMP sensor, a shorted Voltage Reference (VREF) circuit or interference from high voltage ignition system problems.

The Camshaft Position (CMP) sensor is used to correlate crankshaft to camshaft position so that the Engine Control Module (ECM) can determine which cylinder is ready to be fueled by the injector. The CMP is also used to determine which cylinder is misfiring when a misfire is present.

Conditions for Setting the DTC

> CMP sensor pulse is not detected at the correct interval every 4 cylinders.
> Engine is running.

DTC P2105: Throttle Actuator Control (TAC) System - Forced Engine Shutdown
Conditions for Setting the DTC

> Ignition ON.
> The ECM detects the system is in Forced Engine Shutdown Mode.

DTC P2106: Throttle Actuator Control (TAC) System Performance - Throttle Limitation Active
Conditions for Setting the DTC

> Ignition ON.
> The ECM detects the system is in Limit Performance Mode

DTC P2110: Throttle Actuator Control (TAC) System - Forced Limited Engine Speed
Conditions for Setting the DTC

> Ignition ON.
> The ECM detects the system is in Power Management Mode.

PLEASE NOTE that these codes DO NOT NECESSARILY mean that you have a defective TAC. They DO NOT NECESSARILY mean that your TAC is malfunctioning. (although they COULD mean these things) These codes are mostly for informational purposes to let you know that the throttle system is being overridden by the engine control computer. The REASON that this override has taken place must be DIAGNOSED.

DTC P161B: Control Module Torque Performance:
The actual explaination for this one is pretty long and drawn-out. But to put things in simple terms, the trouble shooting charts pretty much say to inspect the engine for hardware problems that could allow excessive air flow. If there are no such problems found, replace the ECM.


There is a Technical Service Bulletin (TSB) that addresses ALL of the codes listed above and involves replacement of the Manifold Absolute Pressure (MAP) sensor to fix the vehicle.

Here is a brief description of the bulletin:

Section Title: Engine
TSB No. TS 18 02228

Division: Automotive
Category: Technical


See table below for possible accompanying DTCs.


Sep 02, 2011 | 2007 Suzuki Forenza Sedan

1 Answer

This is what the code reader tells me. P161B, P0496,P2110, AND P2106 can you help me

P161B = Engine Torque Control - Limit Reached = the torque delivered by the motor has exceeded its rated value
P2106 = Throttle Actuator Control System - Forced Limited Power
P2110 = Throttle Actuator Control System - Forced Limited RPM = the engine overrevved , pumped more power than it was rated for and it had to be forced to slow down by closing the throttle.
All this is caused by P0496 = Evap Emmission high--- purge flow fault = the evap valve got stuck in the fully open position, pumped a lot of fuel in the motor and acted like a fully opened throttle; have it cleaned and if that doesn't fixes, replace it.

Aug 20, 2011 | 2006 Suzuki Forenza

1 Answer

I have an 03 Ram 1500, engine light is on, I had

p0440 - Evap. system performance (this could be something as simple as not turning the gas cap several times after you fill up.

p0456 - Evap leak monitor Small leak detected. - Could be related to the previous code.

p2106 - Throttle Actuator Control System - Forced limited power : This one you might have noticed the vehicle running rough, overdrive not working properly and cruise control will not set.

p2175 - Throttle Actuator Control System - Low airflow detected.

What you might want to try first is have the codes cleared which most auto parts stores offer this for nothing (unless you have a programmer then you can do it yourself). Pour in some fuel injector cleaner into your gas, put a new air filter on. And when you fill up your gas tank, crank the cap several times when you put it back on.
See if the codes come back on after that.

Nov 21, 2009 | 2004 Dodge Ram 1500

5 Answers

Engine goes to idle while driving

P2104 Throttle Actuator Control System - Forced Idle
P2106 Throttle Actuator Control System - Forced Limited Power
P2111 Throttle Actuator Control System - Stuck Open
P2112 Throttle Actuator Control System - Stuck Closed
P2135 Throttle/Pedal Position Sensor/Switch “A” /"B" Voltage Correlation
I looked it up and I will give you a web site I got it from I hope this helps

May 25, 2009 | 2004 Ford Explorer

Not finding what you are looking for?
2004 Ford F150 Logo

2,186 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

77169 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22265 Answers


Level 3 Expert

5572 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides