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P2118 2008 Nissan Sentra Code - Throttle Control Motor Circuit Short

Quick Answer

The P2118 diagnostic trouble code (DTC) for a 2008 Nissan Sentra indicates a problem with the throttle control motor circuit being shorted. Common causes include Faulty throttle control motor, Shorted wiring or connectors in the throttle control motor circuit, Corrosion or damage to the throttle control motor circuit. 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
P2118 2008 Nissan Sentra indicates Throttle Control Motor Circuit Short.
Common causes
Common causes include Faulty throttle control motor, Shorted wiring or connectors in the throttle control motor circuit, Corrosion or damage to the throttle control motor circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P2118 2008 Nissan Sentra Description

The P2118 diagnostic trouble code (DTC) for a 2008 Nissan Sentra indicates a problem with the throttle control motor circuit being shorted. The throttle control motor is a crucial component of the electronic throttle control system, which regulates the amount of air entering the engine. When this circuit is shorted, it can lead to various issues with the vehicle's performance, including reduced power, poor acceleration, and even stalling.

OBDII Code P2118 2008 Nissan Sentra - Throttle Control Motor Circuit Short
P2118 2008 Nissan Sentra Code - Throttle Control Motor Circuit Short

Common Causes of P2118 2008 Nissan Sentra

  1. Faulty throttle control motor
  2. Shorted wiring or connectors in the throttle control motor circuit
  3. Corrosion or damage to the throttle control motor circuit
  4. Issues with the throttle pedal position sensor
  5. ECM malfunction

Symptoms of P2118 2008 Nissan Sentra

  1. Reduced engine power
  2. Poor acceleration
  3. Engine stalling
  4. Check Engine Light illuminated
  5. Difficulty maintaining a steady speed

How to Fix P2118 2008 Nissan Sentra

  1. Begin by conducting a thorough inspection of the throttle control motor circuit, looking for any visible damage, corrosion, or loose connections.
  2. Test the throttle control motor and throttle pedal position sensor to determine if they are functioning correctly.
  3. Replace any faulty components, such as the throttle control motor or sensor, if necessary.
  4. Clear the DTC from the ECM memory using a diagnostic scan tool.
  5. Perform a test drive to ensure that the issue has been resolved and that the vehicle is operating smoothly.

Cost to Fix P2118 2008 Nissan Sentra

The typical repair costs for addressing a P2118 code on a 2008 Nissan Sentra can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Additionally, factors such as location, vehicle make and model, and engine type can also impact the overall repair costs.

When is the Code Detected?

Engine Control Module (ECM) detects short in both circuits between ECM and throttle control motor.

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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 P2118 2008 Nissan Sentra Code

1. What are the common symptoms of OBDII code P2118 in a 2008 Nissan Sentra?

The common symptoms of code P2118 include the Check Engine light illuminating on the dashboard, reduced engine power, and the vehicle going into a fail-safe or limp mode.

2. What does the OBDII code P2118 indicate in a 2008 Nissan Sentra?

Code P2118 in a 2008 Nissan Sentra indicates a problem with the Throttle Control Motor Circuit Short.

3. What are the possible causes of OBDII code P2118 in a 2008 Nissan Sentra?

Possible causes of code P2118 include a faulty throttle control motor, damaged wiring or connectors in the throttle control circuit, or a malfunctioning throttle body.

4. How can I diagnose the Throttle Control Motor Circuit Short in my 2008 Nissan Sentra?

To diagnose the Throttle Control Motor Circuit Short, you can use a scan tool to retrieve the trouble codes, visually inspect the wiring and connectors for any damage, and test the throttle control motor for proper functionality.

5. Can I still drive my 2008 Nissan Sentra with OBDII code P2118?

It is not advisable to drive your 2008 Nissan Sentra with code P2118 as it can lead to reduced engine power and potential safety hazards. It is recommended to address the issue promptly.

6. How can I repair OBDII code P2118 in my 2008 Nissan Sentra?

To repair code P2118, you may need to replace the throttle control motor, repair any damaged wiring or connectors, or clean/replace the throttle body if necessary.

7. Is it safe to reset the Check Engine light after fixing OBDII code P2118 in my 2008 Nissan Sentra?

Yes, once you have fixed the issue causing code P2118, you can safely reset the Check Engine light using an OBDII scanner.

8. Will OBDII code P2118 cause any long-term damage to my 2008 Nissan Sentra if left unaddressed?

Leaving OBDII code P2118 unaddressed can potentially cause further damage to the throttle control system and affect the overall performance of your vehicle over time.

9. How much does it typically cost to repair OBDII code P2118 in a 2008 Nissan Sentra?

The cost of repairing code P2118 can vary depending on the exact cause of the issue, but it may range from a few hundred to a thousand dollars, including parts and labor.

10. Can I prevent OBDII code P2118 from occurring in my 2008 Nissan Sentra in the future?

Regular maintenance of your vehicle, such as keeping the throttle body clean and checking for any wiring issues, can help prevent OBDII code P2118 from occurring in the future.

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