AutoCodes – Generic – C0243

C0243 Code - Engine Drag Control

Quick Answer

The Electronic Brake Control Module (EBCM) sends a Engine Drag Control (EDC) request via a dedicated data line. Common causes include Faulty Engine Drag Control (EDC), Engine Drag Control (EDC) harness is open or shorted, Engine Drag Control (EDC) circuit poor electrical connection. 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: C0243 indicates Engine Drag Control.
Common causes: Common causes include Faulty Engine Drag Control (EDC), Engine Drag Control (EDC) harness is open or shorted, Engine Drag Control (EDC) circuit poor electrical connection.
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 6,697

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0243 Description

The Electronic Brake Control Module (EBCM) sends a Engine Drag Control (EDC) request via a dedicated data line. The Powertrain Control Module (PCM) supplies a pull up voltage of 5 volts that the EBCM switches to ground to create the signal. The EBCM receives a serial data message from the PCM indicating that the EDC circuit has failed.

OBDII Code C0243 - Engine Drag Control - AutoCodes.com — C0243 Code - Engine Drag Control

What does this mean?

What are the Possible Causes of the DTC C0243?

Faulty Engine Drag Control (EDC)
Engine Drag Control (EDC) harness is open or shorted
Engine Drag Control (EDC) circuit poor electrical connection

How to Fix the DTC C0243?

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 C0243 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 C0243 code?

Need more information on how to fix the C0243 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C0243 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

C0243 Buick — Engine Drag Control
C0243 Cadillac — Engine Drag Control
C0243 Chevrolet — Engine Drag Control
C0243 GMC — Engine Drag Control
C0243 Hummer — Engine Drag Control
C0243 Pontiac — Engine Drag Control
C0243 Saturn — Engine Drag Control

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 C0243 Code

1. What are common symptoms of OBDII code C0243 (Engine Drag Control)?

- Common symptoms include illuminated warning lights on the dashboard, reduced engine performance, and potentially abnormal braking behavior.

2. What causes OBDII code C0243 to trigger?

- This code is typically triggered when the Engine Control Module detects an issue with the Engine Drag Control system, usually due to a malfunctioning sensor or wiring issue.

3. How can I diagnose the cause of OBDII code C0243?

- Diagnosis involves using a scan tool to retrieve the specific fault code and then conducting a thorough inspection of the Engine Drag Control system components, such as sensors, wiring, and connectors.

4. Is it safe to continue driving with OBDII code C0243 activated?

- It is not recommended to continue driving with this code activated, as it can affect the vehicle's performance and potentially compromise safety features like traction control and stability control.

5. Can I repair OBDII code C0243 at home?

- Depending on the underlying cause, some repairs related to C0243, such as sensor replacement or wiring repairs, can be done at home if you have the necessary tools and expertise.

6. How much does it typically cost to repair OBDII code C0243 at a professional auto repair shop?

- The cost of repairing this code can vary depending on the cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

7. Will resetting the OBDII code C0243 turn off the warning light?

- Resetting the code may temporarily turn off the warning light, but if the underlying issue is not addressed, the code is likely to re-trigger, resulting in the light coming back on.

8. Can a low battery voltage trigger OBDII code C0243?

- Yes, low battery voltage or electrical system issues can sometimes trigger false codes related to Engine Drag Control, so it's important to ensure the battery and charging system are in good condition.

9. Does OBDII code C0243 affect emissions or fuel economy?

- While the code itself may not directly impact emissions or fuel economy, a malfunction in the Engine Drag Control system can lead to inefficient engine performance, potentially affecting emissions and fuel economy.

10. How urgent is it to address OBDII code C0243?

- It is recommended to address this code promptly to prevent potential safety hazards and further damage to the vehicle's systems.