AutoCodes – Nissan – P2103 Nissan

P2103 Nissan 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 Nissan 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 40,915
How popular is this code, among other codes? Medium
Table of contents Created and updated by William Orellana on Feb 28, 2019
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Code P2103 Nissan 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 Nissan - Throttle Control Motor Relay Circuit Short - AutoCodes.com
P2103 Nissan Code - Throttle Control Motor Relay Circuit Short

What are the Possible Causes of the DTC P2103 Nissan?

  • 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 Nissan?

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 Nissan 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 Nissan code?

Need more information on how to fix the P2103 Nissan code? Get Access to Factory Service Manuals

Need Help with the Code?

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Information for Specific Nissan Models

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 Nissan Code

1. What are the common symptoms of OBDII code P2103 in a Nissan related to the Throttle Control Motor Relay Circuit Short?

The common symptoms include the vehicle going into limp mode, reduced engine power, and the inability to accelerate properly.

2. What are the possible causes of the OBDII code P2103 in a Nissan indicating a Throttle Control Motor Relay Circuit Short?

The code P2103 can be triggered by issues such as a faulty throttle control motor relay, damaged wiring in the circuit, or a malfunctioning throttle body.

3. How can I diagnose the OBDII code P2103 on my Nissan related to the Throttle Control Motor Relay Circuit Short?

To diagnose the code P2103, you may need to perform a thorough inspection of the throttle control motor relay, check for any damaged wiring, and use a scan tool to monitor the throttle position sensor's readings.

4. Is it safe to drive my Nissan with OBDII code P2103 indicating a Throttle Control Motor Relay Circuit Short?

It is not recommended to drive your Nissan with code P2103 as it may lead to further damage to the engine or other components. It is best to have the issue diagnosed and repaired promptly.

5. Can I fix the OBDII code P2103 in my Nissan related to the Throttle Control Motor Relay Circuit Short myself?

While some DIY enthusiasts may attempt to fix the issue themselves, it is recommended to have a qualified mechanic diagnose and repair the problem to ensure it is properly resolved.

6. How much does it typically cost to repair OBDII code P2103 on a Nissan with a Throttle Control Motor Relay Circuit Short?

The cost of repairing code P2103 can vary depending on the root cause of the issue and the labor rates in your area. It is best to get a few quotes from different mechanics to compare prices.

7. Can a faulty throttle body cause the OBDII code P2103 in a Nissan related to the Throttle Control Motor Relay Circuit Short?

Yes, a faulty throttle body can contribute to triggering code P2103 as it is an essential component in the throttle control system.

8. Are there any preventative maintenance tips to avoid OBDII code P2103 in a Nissan related to the Throttle Control Motor Relay Circuit Short?

Regularly checking and maintaining the throttle control system, including the throttle body and wiring, can help prevent issues that may trigger code P2103.

9. Will resetting the OBDII code P2103 in my Nissan related to the Throttle Control Motor Relay Circuit Short make it go away permanently?

Resetting the code may temporarily clear it, but if the underlying issue causing the code is not fixed, it is likely to reappear. It is crucial to address the root cause of the problem for a permanent solution.

10. Can a bad throttle control motor relay cause other OBDII codes to appear in a Nissan?

Yes, a faulty throttle control motor relay can lead to other related OBDII codes appearing, affecting the overall performance of the vehicle.

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