AutoCodes – Generic – P2108

P2108 Code - Throttle Actuator Control Module Performance

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) module, Throttle Actuator Control (TAC) module harness is open or shorted, Throttle Actuator Control (TAC) module circuit poor electrical connection (loose or broken wires). 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: P2108 indicates Throttle Actuator Control Module Performance.
Common causes: Common causes include Faulty Throttle Actuator Control (TAC) module, Throttle Actuator Control (TAC) module harness is open or shorted, Throttle Actuator Control (TAC) module circuit poor electrical connection (loose or broken wires).
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 34,857

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
Cost to Diagnose
FAQs
Comments
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Code P2108 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 P2107 code is set when the Electronic Throttle Control (ETC) control area of the Powertrain Control Module (PCM) failed test. Fault code could the result of incorrect Throttle Position (TP) command of the Throttle Actuator Control Module (TACM).

OBDII Code P2108 - Throttle Actuator Control Module Performance - AutoCodes.com — P2108 Code - Throttle Actuator Control Module Performance

What does this mean?

What are the Possible Causes of the DTC P2108?

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

How to Fix the DTC P2108?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2108 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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Need Help with the Code?

Get the P2108 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P2108 Acura — Throttle Actuator Control Module Problem
P2108 Audi — Throttle Actuator Control Module Performance
P2108 Buick — Throttle Actuator Control Module Performance
P2108 Cadillac — Throttle Actuator Control Module Performance
P2108 Chevrolet — Throttle Actuator Control Module Performance
P2108 Chrysler — Throttle Actuator Control Module Performance
P2108 Dodge — Throttle Actuator Control Module Performance
P2108 Ford — Throttle Actuator Control Module Performance
P2108 GMC — Throttle Actuator Control Module Performance
P2108 Honda — Throttle Actuator Control Module Problem
P2108 Hummer — Throttle Actuator Control Module Performance
P2108 Jeep — Throttle Actuator Control Module Performance
P2108 KIA — Throttle Actuator Control Module Performance
P2108 Lincoln — Throttle Actuator Control Module Performance
P2108 Mazda — Throttle Actuator Control Module Performance
P2108 Mercury — Throttle Actuator Control Module Performance
P2108 Mitsubishi — Throttle Actuator Control Module Performance
P2108 RAM — Throttle Actuator Control Module Performance
P2108 Suzuki — Throttle Actuator Control Module Performance
P2108 Volkswagen — Throttle Actuator Control Module Performance

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 P2108 Code

1. What are the common symptoms of OBDII code P2108 (Throttle Actuator Control Module Performance)?

Symptoms may include reduced engine power, hesitation during acceleration, stalling, and the illumination of the Check Engine light.

2. What are the possible causes of OBDII code P2108?

Potential causes may include a faulty throttle actuator control module, damaged wiring or connectors, a malfunctioning throttle body, or issues with the engine control module.

3. How can I diagnose OBDII code P2108?

Diagnosis typically involves using a scan tool to retrieve the code, checking for any related codes, inspecting the throttle actuator control module and its connections, and testing the throttle body for proper operation.

4. Can I still drive my vehicle with OBDII code P2108?

It is not recommended to drive your vehicle with this code as it can lead to unsafe driving conditions and potential further damage to the engine components.

5. How can I repair OBDII code P2108?

Repair options may include replacing the throttle actuator control module, repairing or replacing damaged wiring, cleaning the throttle body, or reprogramming the engine control module.

6. Will resetting the Check Engine light resolve OBDII code P2108?

Simply resetting the Check Engine light will not fix the underlying issue causing the code. It is important to diagnose and repair the problem to prevent further complications.

7. Is OBDII code P2108 a serious issue?

Yes, OBDII code P2108 should be addressed promptly as it can affect the performance and drivability of your vehicle. Ignoring the code may lead to more severe problems over time.

8. Can a DIY enthusiast fix OBDII code P2108?

While some experienced DIY enthusiasts may be able to address this code, it is recommended to have a professional mechanic diagnose and repair the issue to ensure proper resolution.

9. How much does it cost to repair OBDII code P2108?

The cost of repairing OBDII code P2108 can vary depending on the specific cause of the issue, parts needed, labor costs, and your location. It is best to get estimates from local mechanics.

10. How often does OBDII code P2108 occur in vehicles?

OBDII code P2108 is not extremely common but can occur in vehicles with electronic throttle control systems, particularly in cases of component failure or wiring issues.