AutoCodes – Nissan – P2103 2012 Nissan Sentra

P2103 2012 Nissan Sentra 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 2012 Nissan Sentra 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 2,877

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 P2103 2012 Nissan Sentra 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 2012 Nissan Sentra - Throttle Control Motor Relay Circuit Short - AutoCodes.com — P2103 2012 Nissan Sentra Code - Throttle Control Motor Relay Circuit Short

What does this mean?

What are the Possible Causes of the DTC P2103 2012 Nissan Sentra?

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 2012 Nissan Sentra?

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 P2103 2012 Nissan Sentra 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 2012 Nissan Sentra 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 2012 Nissan Sentra Code

1. What does the OBDII code P2103 mean on a 2012 Nissan Sentra?

P2103 indicates a problem with the throttle control motor relay circuit, specifically a short, which affects the throttle bodyâ€™s ability to regulate airflow.

2. What are the common symptoms of a P2103 code in a 2012 Nissan Sentra?

Symptoms may include reduced engine performance, the throttle not responding properly, stalling, and the Check Engine Light illuminating.

3. What causes the P2103 code to appear in a 2012 Nissan Sentra?

Common causes include a shorted throttle control motor relay, damaged wiring or connectors in the circuit, a malfunctioning throttle body, or a faulty engine control module (ECM).

4. Can I drive my 2012 Nissan Sentra with a P2103 code?

Driving with a P2103 code is not recommended as it can lead to poor throttle response, reduced power, and potential safety issues.

5. How is the P2103 code diagnosed in a 2012 Nissan Sentra?

A technician will use a scan tool to confirm the code, inspect the throttle control motor relay and circuit for shorts or damage, and test the relay, wiring, and throttle body for proper function.

6. How do I fix the P2103 code on my 2012 Nissan Sentra?

Repairs can include replacing a faulty throttle control motor relay, repairing or replacing damaged wiring or connectors, or, in some cases, replacing the throttle body.

7. Can a bad ECM cause a P2103 code in a 2012 Nissan Sentra?

Yes, though rare, a malfunctioning ECM can cause the P2103 code if it fails to control the throttle motor relay properly.

8. What tools are needed to fix a P2103 code on a 2012 Nissan Sentra?

Tools may include a digital multimeter, OBDII scan tool, and basic hand tools for inspecting and repairing wiring or replacing components.

9. How much does it cost to fix the P2103 code on a 2012 Nissan Sentra?

Repair costs vary but can range from $100 for simple wiring repairs to $500 or more if the throttle body or ECM needs replacement.

10. Can a dirty throttle body trigger a P2103 code in a 2012 Nissan Sentra?

While unlikely, a dirty throttle body can sometimes contribute to performance issues, but the code is typically related to electrical shorts in the relay circuit.