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Engine-Codes – Honda – P2118 2008 Honda Accord

P2118 2008 Honda Accord Code - Throttle Actuator Control Motor Current Range/Performance

Quick Answer

The P2118 diagnostic trouble code for a 2008 Honda Accord relates to the Throttle Actuator Control (TAC) system. Common causes include Faulty throttle actuator control motor, Wiring or connector issues in the TAC system, ECM malfunction. 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 Honda Accord indicates Throttle Actuator Control Motor Current Range/Performance.
Common causes
Common causes include Faulty throttle actuator control motor, Wiring or connector issues in the TAC system, ECM malfunction.
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 11, 2024
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Code P2118 2008 Honda Accord Description

The P2118 diagnostic trouble code for a 2008 Honda Accord relates to the Throttle Actuator Control (TAC) system. This code specifically indicates a problem with the Throttle Actuator Control Motor current range or performance. The TAC system is responsible for controlling the throttle opening in response to driver input, allowing the engine to receive the right amount of air for combustion. The throttle actuator control motor is a key component of this system, regulating the throttle opening based on signals from the engine control module (ECM).

OBDII Code P2118 2008 Honda Accord - Throttle Actuator Control Motor Current Range/Performance
P2118 2008 Honda Accord Code - Throttle Actuator Control Motor Current Range/Performance

Common Causes of P2118 2008 Honda Accord

  1. Faulty throttle actuator control motor
  2. Wiring or connector issues in the TAC system
  3. ECM malfunction
  4. Dirty throttle body
  5. Intake air leaks

Symptoms of P2118 2008 Honda Accord

  1. Reduced engine power
  2. Lack of throttle response
  3. Engine stalling or hesitation
  4. Illumination of the check engine light
  5. Rough idling or surging

How to Fix P2118 2008 Honda Accord

  1. Begin by conducting a thorough inspection of the TAC system, including the throttle actuator control motor, wiring, and connectors.
  2. Test the throttle actuator control motor for proper operation and current draw using a multimeter.
  3. Check and clean the throttle body to ensure proper airflow.
  4. Inspect the ECM for any signs of damage or malfunction and reset if necessary.
  5. Finally, clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2118 2008 Honda Accord

The cost of repairing a P2118 code on a 2008 Honda Accord can vary depending on the specific cause of the issue. In general, parts for this repair can range from $100 to $300, with labor costs adding another $100 to $200. Overall, the total repair cost could be anywhere from $200 to $500. It's important to note that prices may vary based on location, the expertise of the technician, and whether genuine OEM parts are used. Additionally, diagnostic time and labor rates at auto repair shops can impact the final cost, with rates typically ranging from $80 to $150 per hour.

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 Honda Accord Code

1. What are the common symptoms of OBDII code P2118 in a 2008 Honda Accord?

- Common symptoms include the check engine light coming on, reduced engine power or acceleration, and potential stalling or rough idling.

2. What does the OBDII code P2118 for a 2008 Honda Accord indicate?

- The code P2118 indicates an issue with the Throttle Actuator Control Motor Current Range/Performance.

3. What are some possible causes of OBDII code P2118 in a 2008 Honda Accord?

- Possible causes include a faulty throttle actuator control motor, wiring or connector issues, a stuck throttle plate, or a malfunctioning electronic throttle control system.

4. How can I diagnose the OBDII code P2118 in my 2008 Honda Accord?

- Diagnosing the code typically involves using a scan tool to retrieve the code, inspecting the throttle actuator and related components for any visible damage, and testing the throttle actuator control motor for proper operation.

5. Can I still drive my 2008 Honda Accord with OBDII code P2118?

- It is not recommended to drive the vehicle with this code present, as it can lead to unsafe driving conditions and potentially cause further damage to the engine or transmission.

6. How can I repair OBDII code P2118 in my 2008 Honda Accord?

- Repairing the code may involve replacing the throttle actuator control motor, repairing any damaged wiring or connectors, cleaning the throttle body, or resetting the electronic throttle control system.

7. Is it possible to clear the OBDII code P2118 in a 2008 Honda Accord without fixing the underlying issue?

- Clearing the code without addressing the underlying problem may temporarily turn off the check engine light, but the issue will likely reoccur if the root cause is not repaired.

8. How much does it typically cost to repair OBDII code P2118 in a 2008 Honda Accord?

- The cost of repairing this code can vary depending on the specific cause of the issue, but it may range from a few hundred dollars for parts and labor to over a thousand dollars if extensive repairs are needed.

9. Are there any preventive measures to avoid OBDII code P2118 in a 2008 Honda Accord?

- Regularly maintaining your vehicle, such as cleaning the throttle body and ensuring proper engine performance, can help prevent issues that may trigger the code P2118.

10. Can a DIY enthusiast fix OBDII code P2118 in a 2008 Honda Accord?

- While some DIY enthusiasts may have the skills to diagnose and repair this code, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure the issue is resolved correctly.

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