AutoCodes – Generic – P2100

P2100 Code - Throttle Actuator 'A' Control Motor Circuit Open

Quick Answer

The throttle actuator is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve. Common causes include Dirty throttle body, Faulty Throttle Actuator Control Motor, Throttle Actuator Control Motor harness is open. 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: P2100 indicates Throttle Actuator 'A' Control Motor Circuit Open.
Common causes: Common causes include Dirty throttle body, Faulty Throttle Actuator Control Motor, Throttle Actuator Control Motor harness is open.
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 61,148

How popular is this code, among other codes? Medium

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 P2100 Description

The throttle actuator is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve. Power supply for the throttle control motor is provided to the ECM via the throttle control motor relay. The throttle control motor relay is ON/OFF controlled by the ECM. When the ignition switch is turned ON, the ECM sends an ON signal to throttle control motor relay and battery voltage is provided to the ECM. When the ignition switch is turned OFF, the ECM sends an OFF signal to throttle control motor relay and battery voltage is not provided to the ECM. The opening angle of the throttle valve is detected by the throttle position sensor which is mounted on the throttle body. The throttle position sensor provides feedback to the ECM. This feedback allows the ECM to control the throttle actuator and monitor the throttle opening angle in response to driver inputs.

OBDII Code P2100 - Throttle Actuator 'A' Control Motor Circuit Open - AutoCodes.com — P2100 Code - Throttle Actuator 'A' Control Motor Circuit Open

What does this mean?

What are the Possible Causes of the DTC P2100?

Dirty throttle body
Faulty Throttle Actuator Control Motor
Throttle Actuator Control Motor harness is open
Throttle Actuator Control Motor circuit poor electrical connection
Faulty Throttle Actuator Control Motor Relay
Faulty Engine Control Module (ECM)

How to Fix the DTC P2100?

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 P2100 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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Information for Specific Makes

P2100 Buick — Throttle Actuator Control Motor Control Circuit
P2100 Cadillac — Throttle Actuator Control Motor Control Circuit
P2100 Chevrolet — Throttle Actuator Control Motor Control Circuit
P2100 Chrysler — Electronic Throttle Control Motor Circuit Open
P2100 Dodge — Electronic Throttle Control Motor Circuit Open
P2100 Ford — Throttle Actuator Control Motor Circuit Open
P2100 GMC — Throttle Actuator Control Motor Control Circuit
P2100 Infiniti — Throttle Control Motor Relay Circuit Open
P2100 Jeep — Electronic Throttle Control Motor Circuit Open
P2100 Lincoln — Throttle Actuator Control Motor Circuit Open
P2100 Mazda — Throttle Actuator Control Motor Circuit Open
P2100 Mercedes-Benz — Throttle Control Motor Relay Circuit Open
P2100 Mercury — Throttle Actuator Control Motor Circuit Open
P2100 Nissan — Throttle Control Motor Relay Circuit Open
P2100 RAM — Electronic Throttle Control Motor Circuit Open

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 P2100 Code

1. What are the common symptoms of OBDII code P2100?

- Common symptoms include engine stalling, rough idling, lack of power, and the vehicle going into limp mode.

2. What causes the Throttle Actuator 'A' Control Motor Circuit Open code (P2100)?

- The code P2100 is typically caused by a malfunction in the throttle actuator control motor circuit, such as a broken wire, loose connection, or a faulty throttle actuator motor.

3. How serious is OBDII code P2100?

- OBDII code P2100 should be addressed promptly to prevent potential safety hazards and further damage to the vehicle's engine and drivability.

4. Can I continue driving with OBDII code P2100?

- It is not recommended to continue driving with OBDII code P2100, as it can lead to unsafe driving conditions and potential further damage to the vehicle.

5. How can I diagnose OBDII code P2100?

- Diagnosing OBDII code P2100 typically involves using a scan tool to retrieve the code, inspecting the throttle actuator control motor circuit for any visible issues, and testing the components for proper functionality.

6. What are some common repair tips for OBDII code P2100?

- Repair tips may include checking and repairing any damaged wiring or connections in the throttle actuator control motor circuit, replacing the throttle actuator motor if faulty, and clearing the code with a scan tool.

7. Can I reset OBDII code P2100 without fixing the underlying issue?

- While you can clear the code temporarily, it is essential to address the underlying issue causing OBDII code P2100 to prevent it from reoccurring.

8. How much does it cost to repair OBDII code P2100?

- The cost of repairing OBDII code P2100 can vary depending on the cause of the issue, the extent of the repairs needed, and whether you choose to do the repairs yourself or take your vehicle to a mechanic.

9. Is OBDII code P2100 a common issue in certain vehicle makes or models?

- OBDII code P2100 can be a common issue in vehicles with electronic throttle control systems, but it can occur in any make or model that has a throttle actuator control motor circuit.

10. How can I prevent OBDII code P2100 from occurring in the future?

- To prevent OBDII code P2100, it is essential to maintain your vehicle's throttle system regularly, address any warning signs promptly, and avoid harsh driving habits that can strain the throttle actuator control motor circuit.