AutoCodes – Nissan – P2100 2005 Nissan Pathfinder

P2100 2005 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 2005 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 4,526

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 2005 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 2005 Nissan Pathfinder - Throttle Control Motor Relay Circuit Open - AutoCodes.com — P2100 2005 Nissan Pathfinder Code - Throttle Control Motor Relay Circuit Open

What does this mean?

What are the Possible Causes of the DTC P2100 2005 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 2005 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 2005 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 2005 Nissan Pathfinder code?

Need more information on how to fix the P2100 2005 Nissan Pathfinder code? Get Access to Factory Service Manuals

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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 2005 Nissan Pathfinder Code

1. What are the common symptoms of OBDII code P2100 in a 2005 Nissan Pathfinder?

- Common symptoms include the Check Engine light illuminating, the vehicle going into limp mode, and reduced or erratic acceleration.

2. What does the OBDII code P2100 indicate in a 2005 Nissan Pathfinder?

- OBDII code P2100 indicates a Throttle Control Motor Relay Circuit Open issue in the throttle control system of the vehicle.

3. What are the possible causes of OBDII code P2100 in a 2005 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 on a 2005 Nissan Pathfinder?

- A diagnostic scan tool can be used to retrieve the OBDII code P2100 and further testing can be done to check the relay, wiring, and throttle control motor for faults.

5. Can I still drive my 2005 Nissan Pathfinder with OBDII code P2100?

- It is not recommended to drive the vehicle with OBDII code P2100 as it can lead to reduced engine performance and potentially unsafe driving conditions.

6. How can I repair the Throttle Control Motor Relay Circuit Open issue in my 2005 Nissan Pathfinder?

- Repair typically involves inspecting and repairing or replacing the throttle control motor relay, repairing any damaged wiring or connectors, and testing the throttle control system.

7. Will resetting the Check Engine light resolve OBDII code P2100 in a 2005 Nissan Pathfinder?

- Resetting the Check Engine light may temporarily turn it off, but it will not resolve the underlying issue causing OBDII code P2100 in the throttle control system.

8. Can a DIY enthusiast fix OBDII code P2100 in a 2005 Nissan Pathfinder?

- Depending on the DIYer's skill level and access to tools, it may be possible to diagnose and repair the Throttle Control Motor Relay Circuit Open issue, but professional assistance is recommended for proper diagnosis and repair.

9. How much does it typically cost to repair OBDII code P2100 in a 2005 Nissan Pathfinder at a mechanic or dealership?

- The cost of repairing OBDII code P2100 can vary depending on the exact cause of the issue, but it may range from $200 to $500 at a mechanic or dealership, including parts and labor.

10. Is it important to address OBDII code P2100 promptly in a 2005 Nissan Pathfinder?

- Yes, it is important to address OBDII code P2100 promptly to prevent further damage to the throttle control system and ensure safe and optimal vehicle performance.