AutoCodes – Ford – P2104 2001 Ford F150

P2104 2001 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 2001 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 2,671

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 2001 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 2001 Ford F150 - Throttle Actuator Control System Forced Idle - AutoCodes.com — P2104 2001 Ford F150 Code - Throttle Actuator Control System Forced Idle

What does this mean?

What are the Possible Causes of the DTC P2104 2001 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 2001 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 2001 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.

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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 2001 Ford F150 Code

1. What does OBDII code P2104 mean for a 2001 Ford F150?

- P2104 indicates a Throttle Actuator Control System Forced Idle error, signaling an issue with the electronic throttle control system.

2. What are common symptoms associated with OBDII code P2104 on a 2001 Ford F150?

- Common symptoms include the vehicle entering forced idle mode, reduced engine power, and the potential for the engine to stall.

3. What are possible causes of OBDII code P2104 on a 2001 Ford F150?

- Causes can include a faulty throttle actuator control module, wiring issues, a malfunctioning throttle body, or a problem with the electronic throttle control system.

4. How can I diagnose the source of OBDII code P2104 on my 2001 Ford F150?

- Diagnosing the issue may involve checking the throttle actuator control module, inspecting wiring for damage, testing the throttle body, and scanning the electronic throttle control system for faults.

5. What are the potential risks of driving with OBDII code P2104 on a 2001 Ford F150?

- Driving with this code present can lead to reduced engine power, potential stalling, and safety hazards on the road. It's recommended to address the issue promptly.

6. Can I repair OBDII code P2104 on a 2001 Ford F150 myself?

- Depending on your mechanical skill level, you may be able to address the issue yourself by inspecting wiring, cleaning the throttle body, or replacing the throttle actuator control module. However, professional help may be needed for more complex repairs.

7. How much does it typically cost to repair OBDII code P2104 on a 2001 Ford F150?

- Repair costs can vary widely depending on the specific issue causing the code, but expenses may include parts like a new throttle actuator control module or throttle body, as well as labor fees if professional assistance is required.

8. Will resetting the OBDII code P2104 on a 2001 Ford F150 make it go away permanently?

- Simply resetting the code may clear it temporarily, but if the underlying issue causing P2104 is not resolved, the code is likely to reappear. It's crucial to diagnose and address the root cause of the problem.

9. Is it safe to continue driving my 2001 Ford F150 with OBDII code P2104 present?

- It is not recommended to drive the vehicle with this code active, as it can lead to potentially dangerous situations due to reduced engine power and the risk of stalling while driving.

10. How can I prevent OBDII code P2104 from appearing on my 2001 Ford F150 in the future?

- Regular maintenance, such as keeping the throttle body clean, inspecting wiring for damage, and addressing any electronic throttle control system issues promptly, can help prevent the recurrence of P2104 in the future.