Engine-CodesNissan – P2103 Nissan

P2103 Nissan Code - Throttle Control Motor Relay Circuit Short

Quick Answer

The P2103 diagnostic trouble code for Nissan vehicles indicates a problem with the throttle control motor relay circuit being shorted. Common causes include Faulty throttle control motor relay, Short circuit in the wiring harness, Corrosion or damage to electrical connectors. 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 Faulty throttle control motor relay, Short circuit in the wiring harness, Corrosion or damage to electrical connectors.
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.
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P2103 Nissan Description

The P2103 diagnostic trouble code for Nissan vehicles indicates a problem with the throttle control motor relay circuit being shorted. This means that there is an issue with the electrical circuit that controls the throttle motor relay, which is responsible for regulating the throttle position in response to driver input. This can lead to issues with acceleration, engine performance, and overall drivability of the vehicle. If not addressed, this issue can cause the vehicle to go into limp mode, where engine power is limited to prevent further damage.

OBDII Code P2103 Nissan - Throttle Control Motor Relay Circuit Short
P2103 Nissan Code - Throttle Control Motor Relay Circuit Short

Common Causes of P2103 Nissan

  1. Faulty throttle control motor relay
  2. Short circuit in the wiring harness
  3. Corrosion or damage to electrical connectors
  4. Issues with the throttle position sensor
  5. ECM (Engine Control Module) malfunction

Symptoms of P2103 Nissan

  1. Engine stalling or hesitation
  2. Reduced engine power
  3. Difficulty accelerating
  4. Check Engine Light illuminated
  5. Rough idling

How to Fix P2103 Nissan

  1. Perform a thorough inspection of the throttle control motor relay circuit and wiring for any signs of damage or corrosion.
  2. Test the throttle control motor relay for proper operation and replace if necessary.
  3. Check and repair any damaged electrical connectors or wiring.
  4. Inspect and potentially replace the throttle position sensor if faulty.
  5. Clear the diagnostic trouble codes and perform a test drive to ensure the issue has been resolved.

Cost to Fix P2103 Nissan

The cost of repairing a P2103 code can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $150 to $400 for parts and labor. Keep in mind that diagnostic time and labor rates can vary, so it's best to get a quote from a trusted auto repair shop in your area.

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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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