AutoCodes – Ford – P2104 2010 Ford Fusion

P2104 2010 Ford Fusion 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 2010 Ford Fusion 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 3,103

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 2010 Ford Fusion 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 2010 Ford Fusion - Throttle Actuator Control System Forced Idle - AutoCodes.com — P2104 2010 Ford Fusion Code - Throttle Actuator Control System Forced Idle

What does this mean?

What are the Possible Causes of the DTC P2104 2010 Ford Fusion?

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 2010 Ford Fusion?

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 2010 Ford Fusion 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 2010 Ford Fusion 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 2010 Ford Fusion Code

What does the OBDII code P2104 mean for a 2010 Ford Fusion?

The P2104 code indicates that the Throttle Actuator Control System is in a forced idle state, which means the vehicle's engine is limiting throttle input to prevent further issues.

What are the common symptoms of the P2104 code?

Common symptoms include reduced engine power, a check engine light, erratic engine idle, and potentially stalling or difficulty accelerating.

What could cause the P2104 code to trigger?

Causes may include a malfunctioning throttle body, issues with the throttle position sensor, wiring problems, or faults in the Engine Control Module (ECM).

How can I diagnose the P2104 code?

To diagnose, start by using an OBDII scanner to confirm the code, then visually inspect the throttle body and related wiring, and check for any other codes that may provide more context.

Is it safe to drive a 2010 Ford Fusion with a P2104 code?

While it's possible to drive, it's not recommended as the vehicle may enter limp mode, limiting acceleration and potentially leading to dangerous situations.

What repairs are typically needed to fix the P2104 code?

Repairs may involve cleaning or replacing the throttle body, fixing or replacing wiring, or addressing issues with the throttle position sensor or ECM.

Can I reset the check engine light after fixing the P2104 code?

Yes, you can reset the check engine light using an OBDII scanner or by disconnecting the battery for a short period, but ensure the underlying issue is resolved to prevent reoccurrence.

How much does it typically cost to repair P2104-related issues?

Repair costs can vary widely based on the specific issue, ranging from $100 for a simple cleaning or sensor replacement to over $1,000 for a new throttle body or ECM.

Will the P2104 code always require professional help?

Not necessarily; if you're familiar with automotive repairs, you may be able to troubleshoot and fix the issue yourself, but professional help is advisable for complex problems.