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Engine-Codes – Nissan – P2118 2008 Nissan Maxima

P2118 2008 Nissan Maxima Code - Throttle Control Motor Circuit Short Bank 1

Quick Answer

The P2118 diagnostic trouble code (DTC) for a 2008 Nissan Maxima indicates a problem with the Throttle Control Motor Circuit on Bank 1. Common causes include Faulty throttle control motor, Short circuit in the wiring or connectors related to the throttle control motor, 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 Maxima indicates Throttle Control Motor Circuit Short Bank 1.
Common causes
Common causes include Faulty throttle control motor, Short circuit in the wiring or connectors related to the throttle control motor, 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 14, 2024
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Code P2118 2008 Nissan Maxima Description

The P2118 diagnostic trouble code (DTC) for a 2008 Nissan Maxima indicates a problem with the Throttle Control Motor Circuit on Bank 1. This code specifically points to an issue with the throttle control motor, which is responsible for controlling the throttle valve opening angle in response to driver input. The throttle control motor is a crucial component of the electronic throttle control system, also known as drive-by-wire.

OBDII Code P2118 2008 Nissan Maxima - Throttle Control Motor Circuit Short Bank 1
P2118 2008 Nissan Maxima Code - Throttle Control Motor Circuit Short Bank 1

Common Causes of P2118 2008 Nissan Maxima

  1. Faulty throttle control motor.
  2. Short circuit in the wiring or connectors related to the throttle control motor.
  3. Corrosion or damage to the throttle control motor circuit.
  4. Issues with the ECM or other related control modules.
  5. Environmental factors such as moisture or debris affecting the throttle control motor.

Symptoms of P2118 2008 Nissan Maxima

  1. Reduced acceleration or lack of response when pressing the gas pedal.
  2. Rough idling or stalling when coming to a stop.
  3. Engine going into limp mode, limiting power output.
  4. Check Engine Light illuminated on the dashboard.
  5. Reduced fuel efficiency.

How to Fix P2118 2008 Nissan Maxima

  1. Begin by diagnosing the specific cause of the P2118 code using a diagnostic scanner to pinpoint the exact issue.
  2. Inspect the wiring and connectors related to the throttle control motor for any signs of damage or corrosion. Repair or replace as needed.
  3. Test the throttle control motor itself to determine if it is functioning properly. Replace the motor if it is found to be faulty.
  4. Clear the DTC from the ECM memory and perform a test drive to ensure the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be required to identify any underlying issues with the electronic throttle control system.

Cost to Fix P2118 2008 Nissan Maxima

The typical repair costs for addressing a P2118 code on a 2008 Nissan Maxima can vary depending on the specific cause of the issue. In general, replacing a faulty throttle control motor can range from $200 to $500, including parts and labor. However, additional costs may be incurred if wiring or connectors need to be repaired or replaced. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

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 Maxima Code

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

The common symptoms of code P2118 include the Check Engine light illuminating on the dashboard, reduced engine power, and potential issues with acceleration response.

2. What are the possible causes of OBDII code P2118 in a 2008 Nissan Maxima?

The main causes of code P2118 in a 2008 Nissan Maxima are a faulty throttle control motor or wiring harness issues related to the throttle control circuit.

3. How serious is OBDII code P2118 in a 2008 Nissan Maxima?

Code P2118 should be addressed promptly as it can lead to reduced vehicle performance and driveability issues. It is recommended to address the underlying cause to prevent further damage.

4. Can I still drive my 2008 Nissan Maxima with OBDII code P2118?

It is not recommended to drive your vehicle with code P2118 as it can result in reduced engine power and potential safety hazards. It is advisable to address the issue before driving the vehicle.

5. How can I diagnose OBDII code P2118 in my 2008 Nissan Maxima?

Diagnosing code P2118 involves using an OBDII scanner to retrieve the code, checking the throttle control motor and related wiring for any visible damage, and conducting a thorough inspection of the throttle control system.

6. What are some repair tips for fixing OBDII code P2118 in a 2008 Nissan Maxima?

Repair tips for addressing code P2118 may include checking and repairing any damaged wiring in the throttle control circuit, replacing the throttle control motor if faulty, and clearing the code with an OBDII scanner.

7. Can a DIY enthusiast fix OBDII code P2118 in a 2008 Nissan Maxima?

While some DIY enthusiasts may be able to address code P2118 by following repair guides and using basic tools, it is recommended to seek professional help for accurate diagnosis and repair of the issue.

8. How much does it cost to repair OBDII code P2118 in a 2008 Nissan Maxima?

The cost of repairing code P2118 can vary depending on the root cause of the issue, labor rates in your area, and whether you choose to fix it yourself or take it to a mechanic. Costs may range from a few hundred to over a thousand dollars.

9. Will resetting the OBDII code P2118 in a 2008 Nissan Maxima make it go away permanently?

Resetting the code may temporarily turn off the Check Engine light, but if the underlying issue causing code P2118 is not addressed, the code is likely to reappear. It is essential to diagnose and fix the root cause to prevent further occurrences.

10. How can I prevent OBDII code P2118 from occurring in my 2008 Nissan Maxima?

To prevent code P2118, it is advisable to perform regular maintenance on your vehicle, including checking the throttle control system for any signs of wear or damage, and addressing any issues promptly to avoid potential code triggers.

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