AutoCodes – Nissan – P2100 2006 Nissan Altima Sedan

P2100 2006 Nissan Altima Sedan 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 2006 Nissan Altima Sedan 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 4,773

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 2006 Nissan Altima Sedan 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 2006 Nissan Altima Sedan - Throttle Control Motor Relay Circuit Open - AutoCodes.com — P2100 2006 Nissan Altima Sedan Code - Throttle Control Motor Relay Circuit Open

What does this mean?

What are the Possible Causes of the DTC P2100 2006 Nissan Altima Sedan?

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 2006 Nissan Altima Sedan?

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 2006 Nissan Altima Sedan 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 2006 Nissan Altima Sedan code?

Need more information on how to fix the P2100 2006 Nissan Altima Sedan 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 2006 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P2100 in a 2006 Nissan Altima Sedan?

- Common symptoms include the vehicle going into "limp mode," reduced engine power, and the Check Engine Light illuminating.

2. What does the OBDII code P2100 "Throttle Control Motor Relay Circuit Open" mean for a 2006 Nissan Altima Sedan?

- This code indicates that there is an open circuit in the relay that controls the throttle control motor.

3. What are the possible causes of OBDII code P2100 in a 2006 Nissan Altima Sedan?

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

4. How can I diagnose the cause of OBDII code P2100 in my 2006 Nissan Altima Sedan?

- Diagnosis typically involves checking the throttle control motor relay, inspecting the wiring and connectors for damage, and testing the throttle control motor for proper operation.

5. Can I still drive my 2006 Nissan Altima Sedan with OBDII code P2100 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to reduced engine power and potentially unsafe driving conditions.

6. How can I repair OBDII code P2100 in my 2006 Nissan Altima Sedan?

- Repair usually involves replacing the faulty throttle control motor relay, repairing any damaged wiring or connectors, and ensuring proper functionality of the throttle control motor.

7. Is it possible to reset the OBDII code P2100 in a 2006 Nissan Altima Sedan without fixing the underlying issue?

- While clearing the code may temporarily turn off the Check Engine Light, the underlying issue causing the code will persist until properly addressed.

8. Are there any preventative maintenance measures to avoid OBDII code P2100 in a 2006 Nissan Altima Sedan?

- Regularly inspecting and maintaining the throttle control system, including the relay and wiring, can help prevent issues that may trigger this code.

9. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P2100 in a 2006 Nissan Altima Sedan?

- Depending on the specific cause, a DIY enthusiast may be able to diagnose and repair this code with the right tools and resources. However, professional assistance is recommended for complex issues.

10. How long does it typically take to repair OBDII code P2100 in a 2006 Nissan Altima Sedan?

- The repair time can vary depending on the exact cause of the code and the expertise of the individual performing the repair, but it may take anywhere from a few hours to a day.