AutoCodes – Nissan – P2103 2008 Nissan Altima Sedan

P2103 2008 Nissan Altima Sedan Code - Throttle Control Motor Relay Circuit Short

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: P2103 2008 Nissan Altima Sedan indicates Throttle Control Motor Relay Circuit Short.
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 4,012

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
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P2103 2008 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 P2103 2008 Nissan Altima Sedan - Throttle Control Motor Relay Circuit Short - AutoCodes.com — P2103 2008 Nissan Altima Sedan Code - Throttle Control Motor Relay Circuit Short

What does this mean?

What are the Possible Causes of the DTC P2103 2008 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 P2103 2008 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 does this mean?

Code Tech Notes

Check Fuse #43 (see picture)

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2103 2008 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 P2103 2008 Nissan Altima Sedan 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 P2103 2008 Nissan Altima Sedan Code

1. What are common symptoms of OBDII code P2103 in a 2008 Nissan Altima Sedan?

- Common symptoms include the vehicle entering "limp mode," reduced engine power, and the inability to accelerate properly.

2. What can cause the OBDII code P2103 in a 2008 Nissan Altima Sedan?

- The code P2103 is typically triggered by a short in the throttle control motor relay circuit, often caused by wiring issues or a faulty throttle control motor.

3. How can I diagnose the throttle control motor relay circuit short in my 2008 Nissan Altima Sedan?

- Diagnosing the issue involves inspecting the wiring harness for damage, testing the throttle control motor relay, and checking for loose or corroded electrical connections.

4. Can I drive my 2008 Nissan Altima Sedan with the OBDII code P2103 active?

- It is not recommended to drive the vehicle with the code P2103 active, as it can lead to further damage and safety hazards due to the throttle control malfunction.

5. How can I fix the throttle control motor relay circuit short in my 2008 Nissan Altima Sedan?

- Repair options include repairing or replacing damaged wiring, replacing the throttle control motor relay, or addressing any underlying electrical issues causing the short circuit.

6. Will resetting the OBDII code P2103 in my 2008 Nissan Altima Sedan make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the code is not fixed, it is likely to reappear.

7. Is the throttle control motor relay circuit short a common issue in 2008 Nissan Altima Sedans?

- While not extremely common, the throttle control motor relay circuit short can occur in 2008 Nissan Altima Sedans due to various factors like age, wear, and electrical issues.

8. Can a DIY enthusiast repair the throttle control motor relay circuit short in a 2008 Nissan Altima Sedan?

- Depending on the individual's skill level, repairing the throttle control motor relay circuit short may be possible with the right tools, knowledge, and access to replacement parts.

9. How long does it typically take to repair the throttle control motor relay circuit short in a 2008 Nissan Altima Sedan?

- The repair time can vary based on the extent of the damage and the troubleshooting required, but it can take anywhere from a few hours to a full day to fix the issue.

10. Should I seek professional help for diagnosing and repairing the OBDII code P2103 in my 2008 Nissan Altima Sedan?

- If you are unsure about diagnosing or repairing the issue yourself, or if the problem seems complex, it is advisable to seek professional help from a qualified mechanic or technician.