AutoCodesNissan – P2103 2010 Nissan Altima Sedan

P2103 2010 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 2010 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 3,780
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Feb 28, 2019
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Code P2103 2010 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 2010 Nissan Altima Sedan - Throttle Control Motor Relay Circuit Short - AutoCodes.com
P2103 2010 Nissan Altima Sedan Code - Throttle Control Motor Relay Circuit Short

What are the Possible Causes of the DTC P2103 2010 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 2010 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2103 2010 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 2010 Nissan Altima Sedan Code

1. What does the OBDII code P2103 mean on a 2010 Nissan Altima?

P2103 indicates a problem with the Throttle Control Motor Relay Circuit, specifically a short in the circuit.

2. What are the common symptoms of code P2103 in a 2010 Nissan Altima?

Symptoms may include reduced engine power, unresponsive throttle, the check engine light turning on, and potentially the vehicle entering "limp mode."

3. What causes the P2103 code on a 2010 Nissan Altima?

Common causes include a shorted throttle control motor relay, damaged wiring or connectors, or a malfunctioning throttle body assembly.

4. Can I drive my 2010 Nissan Altima with the P2103 code?

Driving with the P2103 code is not recommended, as it may result in reduced power and poor throttle response, which can be unsafe.

5. How do I diagnose the P2103 code on a 2010 Nissan Altima?

Diagnosing involves inspecting the wiring and connectors for damage, testing the throttle control motor relay, and checking the throttle body for faults.

6. How do I fix the P2103 code on a 2010 Nissan Altima?

Repairs may include replacing the throttle control motor relay, repairing or replacing damaged wiring, or replacing the throttle body if necessary.

7. How much does it cost to repair the P2103 code on a 2010 Nissan Altima?

The cost depends on the repair needed, ranging from $50-$150 for wiring repairs to $300-$600 for throttle body replacement.

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

A dirty throttle body is unlikely to directly cause P2103, but a malfunctioning throttle body due to other issues could trigger the code.

9. Does clearing the P2103 code fix the issue on a 2010 Nissan Altima?

Clearing the code may temporarily turn off the check engine light, but it won’t resolve the underlying problem causing the code.

10. Is the P2103 code related to the throttle position sensor?

While P2103 specifically involves the throttle control motor relay circuit, issues with the throttle position sensor could indirectly contribute to throttle-related problems.

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