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.

Monday, June 5th, 2023 AT 2:01 AM

1 Reply

KEN L

MASTER CERTIFIED MECHANIC
50,226 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:

P2111 - Throttle Actuator Control System - Stuck Open:
P2104 - Throttle Actuator Control System - Forced Idle:

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)