AutoCodes – Ford – P2105 1999 Ford F150

P2105 1999 Ford F150 Code - Throttle Actuator Control System - Forced Engine Shutdown

Quick Answer

The electronic Throttle Actuator Control (TAC) is a DC motor controlled by the Powertrain Control Module (PCM). Common causes include Faulty Throttle Actuator Control (TAC), Throttle Actuator Control (TAC) harness is open or shorted, Throttle Actuator Control (TAC) circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P2105 1999 Ford F150 indicates Throttle Actuator Control System - Forced Engine Shutdown.
Common causes: Common causes include Faulty Throttle Actuator Control (TAC), Throttle Actuator Control (TAC) harness is open or shorted, Throttle Actuator Control (TAC) circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 2,017

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P2105 1999 Ford F150 Description

The electronic Throttle Actuator Control (TAC) is a DC motor controlled by the Powertrain Control Module (PCM). There are 2 designs for the TAC, parallel and inline. The parallel design has the motor under the bore parallel to the plate shaft. The motor housing is integrated into the main housing. The inline design has a separate motor housing. An internal spring is used in both designs to return the throttle plate to a default position. The default position is typically a throttle angle of 7 to 8 degrees from the hard stop angle. The closed throttle plate hard stop prevents the throttle from binding in the bore. This hard stop setting is not adjustable and is set to result in less airflow than the minimum engine airflow required at idle. The P2105 code is set when the Throttle Actuator Control (TAC) system is in the Failure Mode Effects Management (FMEM) mode of forced engine shutdown.

OBDII Code P2105 1999 Ford F150 - Throttle Actuator Control System - Forced Engine Shutdown - AutoCodes.com — P2105 1999 Ford F150 Code - Throttle Actuator Control System - Forced Engine Shutdown

What does this mean?

What are the Possible Causes of the DTC P2105 1999 Ford F150?

Faulty Throttle Actuator Control (TAC)
Throttle Actuator Control (TAC) harness is open or shorted
Throttle Actuator Control (TAC) circuit poor electrical connection

How to Fix the DTC P2105 1999 Ford F150?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

The P2105 code is an informational code and may be set in combination with a number of other codes which are causing the FMEM. Diagnose other codes first.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2105 1999 Ford F150 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P2105 1999 Ford F150 code?

Need more information on how to fix the P2105 1999 Ford F150 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P2105 1999 Ford F150 code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2105 1999 Ford F150 Code

1. What are the common symptoms of OBDII code P2105 in a 1999 Ford F150?

- Common symptoms include the engine stalling or shutting down unexpectedly, reduced engine power, and the vehicle going into a limp mode.

2. What can cause OBDII code P2105 in a 1999 Ford F150?

- The code P2105 is typically triggered by a faulty throttle actuator control system, damaged wiring or connectors, or a malfunctioning throttle body.

3. How serious is OBDII code P2105 in a 1999 Ford F150?

- OBDII code P2105 is a serious issue as it can lead to the engine shutting down unexpectedly while driving, which can pose a safety risk.

4. How can I diagnose OBDII code P2105 in a 1999 Ford F150?

- Diagnosis involves using an OBDII scanner to retrieve the trouble codes, inspecting the throttle body and related components for damage, and testing the throttle actuator control system.

5. What are some repair tips for fixing OBDII code P2105 in a 1999 Ford F150?

- Repair tips include checking and repairing any damaged wiring or connectors, cleaning the throttle body, and replacing the throttle actuator control system if necessary.

6. Can I drive my 1999 Ford F150 with OBDII code P2105?

- It is not recommended to drive your vehicle with OBDII code P2105, as it can lead to engine stalling or shutdown, potentially causing accidents or further damage.

7. How much does it cost to repair OBDII code P2105 in a 1999 Ford F150?

- The cost of repairing OBDII code P2105 can vary depending on the extent of the issue. It may range from a simple repair of wiring or connectors to replacing the throttle actuator control system.

8. Can I reset OBDII code P2105 in a 1999 Ford F150?

- While you can clear the trouble codes with an OBDII scanner, it is important to diagnose and repair the underlying issue causing the code to prevent it from recurring.

9. Will OBDII code P2105 cause my 1999 Ford F150 to fail an emissions test?

- Yes, OBDII code P2105 can cause your vehicle to fail an emissions test, as it indicates a problem with the throttle actuator control system, which affects engine performance.

10. How long does it take to repair OBDII code P2105 in a 1999 Ford F150?

- The repair time for OBDII code P2105 can vary depending on the exact cause of the issue and the expertise of the technician. It may take a few hours to a full day to complete the repair.