AutoCodes – Ford – P2104 2003 Ford F150

P2104 2003 Ford F150 Code - Throttle Actuator Control System Forced Idle

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: P2104 2003 Ford F150 indicates Throttle Actuator Control System Forced Idle.
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.

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Code Popularity 5,219

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
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Code P2104 2003 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 P2104 code is set when the Throttle Actuator Control (TAC) system is in the Failure Mode Effects Management (FMEM) mode of forced idle.

OBDII Code P2104 2003 Ford F150 - Throttle Actuator Control System Forced Idle - AutoCodes.com — P2104 2003 Ford F150 Code - Throttle Actuator Control System Forced Idle

What does this mean?

What are the Possible Causes of the DTC P2104 2003 Ford F150?

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

How to Fix the DTC P2104 2003 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 P2104 code is an informational code only and may set in combination with a number of other codes which are causing the Failure Mode Effects Management (FMEM). If other codes are present, diagnose other codes first.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2104 2003 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 P2104 2003 Ford F150 code?

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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 P2104 2003 Ford F150 Code

1. What does OBDII code P2104 mean for a 2003 Ford F150?

The OBDII code P2104 in a 2003 Ford F150 indicates an issue with the Throttle Actuator Control System Forced Idle.

2. What are the common symptoms of OBDII code P2104 in a 2003 Ford F150?

Common symptoms of OBDII code P2104 in a 2003 Ford F150 include the vehicle going into forced idle mode, reduced engine power, and the Check Engine light illuminating.

3. What are the possible causes of OBDII code P2104 in a 2003 Ford F150?

Possible causes of OBDII code P2104 in a 2003 Ford F150 include a faulty throttle body, damaged wiring or connectors, a malfunctioning throttle position sensor, or issues with the electronic throttle control system.

4. How can I diagnose OBDII code P2104 in a 2003 Ford F150?

Diagnosing OBDII code P2104 in a 2003 Ford F150 typically involves using an OBDII scanner to retrieve the code, inspecting the throttle body and related components for any visible damage, and testing the throttle position sensor for proper functioning.

5. Can I drive my 2003 Ford F150 with OBDII code P2104?

It is not recommended to drive your 2003 Ford F150 with OBDII code P2104, as the vehicle may enter forced idle mode, leading to reduced engine power and potential safety hazards.

6. How can I repair OBDII code P2104 in my 2003 Ford F150?

Repairing OBDII code P2104 in a 2003 Ford F150 typically involves replacing the faulty throttle body, repairing any damaged wiring or connectors, or recalibrating the electronic throttle control system.

7. Is it safe to reset the Check Engine light after fixing OBDII code P2104 in a 2003 Ford F150?

Yes, once you have fixed the issue causing OBDII code P2104 in your 2003 Ford F150, you can safely reset the Check Engine light using an OBDII scanner.

8. Can a DIY enthusiast fix OBDII code P2104 in a 2003 Ford F150?

Depending on their experience and tools available, a DIY enthusiast may be able to fix OBDII code P2104 in a 2003 Ford F150 by following repair guides and procedures specific to the throttle actuator control system.

9. How much does it cost to repair OBDII code P2104 in a 2003 Ford F150 at a mechanic?

The cost to repair OBDII code P2104 in a 2003 Ford F150 at a mechanic can vary depending on the exact cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Will OBDII code P2104 in a 2003 Ford F150 affect the vehicle's performance?

Yes, OBDII code P2104 in a 2003 Ford F150 can affect the vehicle's performance by causing forced idle mode, reduced engine power, and potentially unsafe driving conditions.