AutoCodes – Nissan – P2103 2011 Nissan Altima Sedan

P2103 2011 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 2011 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 4,602

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 2011 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 2011 Nissan Altima Sedan - Throttle Control Motor Relay Circuit Short - AutoCodes.com — P2103 2011 Nissan Altima Sedan Code - Throttle Control Motor Relay Circuit Short

What does this mean?

What are the Possible Causes of the DTC P2103 2011 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 2011 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 2011 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 2011 Nissan Altima Sedan Code

1. What does OBDII code P2103 mean on a 2011 Nissan Altima Sedan?

Code P2103 indicates a problem with the throttle control motor relay circuit, specifically a short to ground, power, or an internal issue.

2. What are the common symptoms of code P2103 in a 2011 Nissan Altima?

Symptoms may include reduced engine performance, the throttle not responding properly, the vehicle entering limp mode, and the check engine light illuminating.

3. What causes the P2103 code to be triggered?

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

4. Can I drive my 2011 Nissan Altima with code P2103 active?

Driving with an active P2103 code is not recommended, as the vehicle may go into limp mode or have unpredictable throttle response, which could be unsafe.

5. How do I diagnose code P2103 on a 2011 Nissan Altima?

Start by inspecting the throttle control motor relay, wiring, and connectors for damage or corrosion. Use a multimeter to check for shorts in the circuit and test the relay for proper operation.

6. How do I fix the P2103 code on my 2011 Nissan Altima?

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

7. Can a dirty throttle body cause the P2103 code?

A dirty throttle body is unlikely to directly trigger the P2103 code, but it may contribute to other throttle control issues. Cleaning it can help but wonâ€™t resolve a circuit short.

8. How much does it cost to repair a P2103 code on a 2011 Nissan Altima?

Repair costs vary but may range from $100 to $600, depending on whether the issue is with the relay, wiring, or throttle body, and whether professional labor is involved.

9. Does the P2103 code always mean the throttle body is faulty?

No, the P2103 code doesnâ€™t always indicate a faulty throttle body. It could also be caused by wiring issues, a bad relay, or a problem with the ECM.

10. Can a faulty ECM cause the P2103 code?

Yes, a malfunctioning ECM could cause the P2103 code, but this is typically a less common issue compared to relay or wiring problems.