AutoCodes – Ford – P2105 2008 Ford Fusion

P2105 2008 Ford Fusion 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 2008 Ford Fusion 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.

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Code Popularity 3,071

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 P2105 2008 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 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 2008 Ford Fusion - Throttle Actuator Control System - Forced Engine Shutdown - AutoCodes.com — P2105 2008 Ford Fusion Code - Throttle Actuator Control System - Forced Engine Shutdown

What does this mean?

What are the Possible Causes of the DTC P2105 2008 Ford Fusion?

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 2008 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 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 2008 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 P2105 2008 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 P2105 2008 Ford Fusion Code

1. What does OBDII code P2105 mean for a 2008 Ford Fusion?

Code P2105 indicates a malfunction in the Throttle Actuator Control System, leading to a forced engine shutdown in the 2008 Ford Fusion.

2. What are the common symptoms of OBDII code P2105 in a 2008 Ford Fusion?

Common symptoms include the vehicle going into "limp mode," reduced engine power, difficulty accelerating, and the engine stalling unexpectedly.

3. What are the possible causes of OBDII code P2105 in a 2008 Ford Fusion?

Potential causes may include a faulty throttle body, damaged wiring or connectors in the throttle actuator control circuit, or a problem with the powertrain control module (PCM).

4. How can I diagnose OBDII code P2105 in my 2008 Ford Fusion?

Diagnosing this code usually involves using a scan tool to retrieve the specific fault codes, checking the throttle body and related components for any visible damage, and performing a thorough inspection of the wiring and connectors.

5. Can I still drive my 2008 Ford Fusion with OBDII code P2105?

It is not recommended to drive the vehicle with code P2105, as it can lead to safety issues and further damage. It is best to have the issue diagnosed and repaired as soon as possible.

6. Is it safe to continue driving if my 2008 Ford Fusion goes into "limp mode" due to code P2105?

Driving in "limp mode" is meant for short distances at reduced speeds to get the vehicle to a safe location for repair. Prolonged driving in this mode can cause further damage to the engine.

7. How much does it typically cost to repair OBDII code P2105 in a 2008 Ford Fusion?

The cost of repair can vary depending on the exact cause of the issue. It may range from a few hundred dollars for a simple fix like replacing a sensor to over a thousand dollars if the throttle body needs to be replaced.

8. Can I reset the OBDII code P2105 in my 2008 Ford Fusion by disconnecting the battery?

While disconnecting the battery may clear the code temporarily, it is not a recommended long-term solution. The underlying issue causing the code needs to be addressed to prevent it from reoccurring.

9. Are there any preventive measures to avoid OBDII code P2105 in a 2008 Ford Fusion?

Regular maintenance, such as cleaning the throttle body, inspecting wiring for damage, and using quality fuel, can help prevent issues that may lead to code P2105.

10. How long does it take to repair OBDII code P2105 in a 2008 Ford Fusion?

The repair time can vary depending on the exact cause of the code and the availability of parts. In general, it may take a few hours to a full day for diagnosis and repair.