AutoCodes – Nissan – P2103 2009 Nissan Altima Sedan

P2103 2009 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 2009 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 4,873

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 2009 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 2009 Nissan Altima Sedan - Throttle Control Motor Relay Circuit Short - AutoCodes.com — P2103 2009 Nissan Altima Sedan Code - Throttle Control Motor Relay Circuit Short

What does this mean?

What are the Possible Causes of the DTC P2103 2009 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 2009 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 2009 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.

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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 2009 Nissan Altima Sedan Code

1. What are the common symptoms of OBDII code P2103 in a 2009 Nissan Altima Sedan?

The common symptoms of OBDII code P2103 in a 2009 Nissan Altima Sedan include reduced engine power, illuminated Check Engine light, and difficulty starting the vehicle.

2. What does the OBDII code P2103 on a 2009 Nissan Altima Sedan indicate?

OBDII code P2103 in a 2009 Nissan Altima Sedan indicates a problem with the Throttle Control Motor Relay Circuit Short.

3. What are the possible causes of OBDII code P2103 in a 2009 Nissan Altima Sedan?

Possible causes of OBDII code P2103 in a 2009 Nissan Altima Sedan include a faulty throttle control motor relay, damaged wiring or connectors in the circuit, or a malfunctioning throttle body.

4. How can I diagnose the Throttle Control Motor Relay Circuit Short issue in my 2009 Nissan Altima Sedan?

Diagnosing the Throttle Control Motor Relay Circuit Short issue in a 2009 Nissan Altima Sedan involves checking the throttle control motor relay, inspecting the wiring and connectors for damage, and testing the throttle body for proper operation.

5. Can I drive my 2009 Nissan Altima Sedan with OBDII code P2103?

It is not recommended to drive your 2009 Nissan Altima Sedan with OBDII code P2103, as it can lead to further damage to the vehicle and potentially unsafe driving conditions.

6. How can I repair OBDII code P2103 in my 2009 Nissan Altima Sedan?

To repair OBDII code P2103 in a 2009 Nissan Altima Sedan, you may need to replace the faulty throttle control motor relay, repair any damaged wiring or connectors, or replace the throttle body if necessary.

7. Is it safe to continue driving my 2009 Nissan Altima Sedan if the Check Engine light is on due to code P2103?

It is not recommended to continue driving your 2009 Nissan Altima Sedan if the Check Engine light is on due to code P2103, as it can impact the vehicle's performance and safety.

8. How much does it typically cost to repair OBDII code P2103 in a 2009 Nissan Altima Sedan?

The cost to repair OBDII code P2103 in a 2009 Nissan Altima Sedan can vary depending on the extent of the issue and the specific repairs needed. It is advisable to consult with a mechanic for an accurate estimate.

9. Can OBDII code P2103 in a 2009 Nissan Altima Sedan cause other problems if left unrepaired?

If left unrepaired, OBDII code P2103 in a 2009 Nissan Altima Sedan can potentially cause further damage to the vehicle's engine and electrical system, leading to more serious issues over time.

10. How often does OBDII code P2103 occur in a 2009 Nissan Altima Sedan?

OBDII code P2103 in a 2009 Nissan Altima Sedan is relatively uncommon but can occur due to various factors such as wear and tear, electrical issues, or component failure.