AutoCodes – Nissan – P2100 2009 Nissan Pathfinder

P2100 2009 Nissan Pathfinder Code - Throttle Control Motor Relay 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 Relay, Throttle Actuator Control Motor Relay 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 2009 Nissan Pathfinder indicates Throttle Control Motor Relay Circuit Open.
Common causes: Common causes include Dirty throttle body, Faulty Throttle Actuator Control Motor Relay, Throttle Actuator Control Motor Relay 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 2,920

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 Feb 28, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2100 2009 Nissan Pathfinder 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 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 2009 Nissan Pathfinder - Throttle Control Motor Relay Circuit Open - AutoCodes.com — P2100 2009 Nissan Pathfinder Code - Throttle Control Motor Relay Circuit Open

What does this mean?

What are the Possible Causes of the DTC P2100 2009 Nissan Pathfinder?

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

How to Fix the DTC P2100 2009 Nissan Pathfinder?

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 2009 Nissan Pathfinder 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 P2100 2009 Nissan Pathfinder 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 P2100 2009 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P2100 in a 2009 Nissan Pathfinder?

- Common symptoms include the Check Engine light illuminating, reduced engine power, and potential difficulty accelerating.

2. What does the OBDII code P2100 on a 2009 Nissan Pathfinder indicate?

- The code P2100 indicates a problem with the Throttle Control Motor Relay Circuit being open, leading to potential issues with the throttle control system.

3. What are the possible causes of OBDII code P2100 in a 2009 Nissan Pathfinder?

- Possible causes include a faulty throttle control motor relay, damaged wiring or connectors in the circuit, or a malfunctioning throttle control motor.

4. How can I diagnose the Throttle Control Motor Relay Circuit Open issue in my 2009 Nissan Pathfinder?

- Diagnosing the issue may involve checking the throttle control motor relay, inspecting the wiring and connectors for damage, and testing the throttle control motor for proper functioning.

5. Can I continue driving my 2009 Nissan Pathfinder with OBDII code P2100 present?

- It is not recommended to continue driving with the code present, as it can lead to further damage to the throttle control system and potentially unsafe driving conditions.

6. How can I repair the Throttle Control Motor Relay Circuit Open issue in my 2009 Nissan Pathfinder?

- Repairing the issue may involve replacing the faulty throttle control motor relay, repairing damaged wiring or connectors, or replacing the throttle control motor if necessary.

7. Will resetting the OBDII code P2100 in my 2009 Nissan Pathfinder make the issue go away?

- Resetting the code may temporarily turn off the Check Engine light, but it will not fix the underlying problem causing the Throttle Control Motor Relay Circuit Open issue.

8. Can a DIY enthusiast fix the OBDII code P2100 in a 2009 Nissan Pathfinder?

- Depending on the level of expertise, a DIY enthusiast may be able to diagnose and repair the issue, but it is recommended to consult a professional mechanic for accurate diagnosis and proper repairs.

9. How much does it typically cost to repair OBDII code P2100 in a 2009 Nissan Pathfinder?

- The cost of repairs can vary based on the specific cause of the issue, but it may range from $100 to $300 for parts and labor, depending on the extent of the repairs needed.

10. Are there any preventive measures to avoid encountering the Throttle Control Motor Relay Circuit Open issue in my 2009 Nissan Pathfinder?

- Regular maintenance checks, such as inspecting wiring and connectors, can help prevent issues with the throttle control system that could trigger the OBDII code P2100.