AutoCodes – GMC – C0243 GMC

C0243 GMC 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 GMC 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 1,725

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

What does this mean?

What are the Possible Causes of the DTC C0243 GMC?

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 GMC?

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 GMC 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.

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

Need Help with the Code?

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

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 GMC Code

1. What is OBDII code C0243 in a GMC vehicle?

- OBDII code C0243 in a GMC vehicle refers to Engine Drag Control (EDC) Circuit Open.

2. What are the common symptoms of OBDII code C0243 in a GMC?

- Common symptoms of OBDII code C0243 in a GMC may include the Check Engine Light illuminated on the dashboard and potential issues with the engine's drag control system.

3. What can cause OBDII code C0243 to trigger in a GMC?

- OBDII code C0243 in a GMC can be triggered by issues such as a malfunctioning EDC solenoid, damaged wiring or connectors in the EDC circuit, or a faulty EDC module.

4. How can I diagnose OBDII code C0243 in my GMC vehicle?

- Diagnosing OBDII code C0243 in a GMC typically involves using a professional OBDII scanner to retrieve the specific fault code, checking the EDC components for any visible damage, and testing the circuit for continuity.

5. Is it safe to drive my GMC with OBDII code C0243 present?

- It is generally not recommended to drive your GMC with OBDII code C0243 present, as it can indicate potential issues with the engine drag control system that may affect the vehicle's performance and safety.

6. Can I repair OBDII code C0243 in my GMC myself?

- Repairing OBDII code C0243 in a GMC may require advanced automotive knowledge and specialized tools. It is recommended to consult a professional mechanic for accurate diagnosis and repair.

7. How much does it typically cost to fix OBDII code C0243 in a GMC?

- The cost to fix OBDII code C0243 in a GMC can vary depending on the root cause of the issue, the extent of the repairs needed, and labor costs. It is advisable to obtain quotes from different repair shops for an accurate estimate.

8. Will resetting the OBDII code C0243 in my GMC make it go away permanently?

- Simply resetting the OBDII code C0243 in your GMC may temporarily turn off the Check Engine Light, but if the underlying issue is not addressed, the code is likely to reappear. It's crucial to diagnose and fix the root cause of the problem.

9. Can OBDII code C0243 affect the fuel efficiency of my GMC?

- OBDII code C0243 may indirectly affect the fuel efficiency of your GMC if it is related to the engine drag control system. Resolving the issue promptly can help maintain optimal fuel efficiency.

10. How long does it typically take to repair OBDII code C0243 in a GMC?

- The time required to repair OBDII code C0243 in a GMC can vary depending on the complexity of the issue, availability of parts, and the mechanic's expertise. In some cases, it may be a relatively quick fix, while in others, it could take several hours or more.