Codes P2111 and P2104?

JAMIE SMITHEY

MEMBER
2007 FORD F-150
5.4L
V8
2WD
AUTOMATIC
227,580 MILES

I was data logging my truck and the failsafe mode came on and went to idle mode. I got home and looked these codes up. I changed the throttle body with a bigger 80mm bbk throttle body. Drove it down the road and the same codes came back up. So, I bought a 75mm throttle body. It done good for a day then going down the road almost at a stop it did it again. 3 throttle bodies and the same code. Now I got that 75mm throttle body on. It's not done it in 3 days now. But the idling is surging up and down. What sensor is fixing to go out. I'm thinking accelerator pedal position sensor.

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
42,913 POSTS

Yep, it sounds like the throttle pedal sensor needs to be replaced. Here is information for the codes and how to change out the sensor in the images below:

The error codes P2111 and P2104 are related to the throttle actuator control system in a vehicle. Here's a breakdown of each code:

P2111 - Throttle Actuator Control System - Stuck Open: This code indicates that the throttle plate in the electronic throttle control system is stuck in an open position. The throttle plate is responsible for regulating the airflow into the engine. When it is stuck open, it can cause issues with engine performance and responsiveness. This code is often triggered by a malfunctioning throttle actuator or a problem with the throttle body assembly.

P2104 - Throttle Actuator Control System - Forced Idle: This code indicates that the throttle actuator control system is being forced into an idle position. The throttle actuator controls the opening and closing of the throttle plate based on driver inputs and commands from the engine control module (ECM). When the throttle actuator is forced into idle, it means that the ECM is not able to control the throttle properly. This can lead to poor engine performance, reduced power, and limited acceleration.

Did you get a new TP sensor with the throttle body? Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.

Images (Click to make bigger)