AutoCodes – GMC – C0268 GMC

C0268 GMC Code - ABS Pump Motor Circuit Shorted

Quick Answer

The Electronic Brake Control Module (EBCM) applies the ground needed for pump motor activation. Common causes include Faulty ABS Pump Motor, ABS Pump Motor harness is open or shorted, ABS Pump Motor 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: C0268 GMC indicates ABS Pump Motor Circuit Shorted.
Common causes: Common causes include Faulty ABS Pump Motor, ABS Pump Motor harness is open or shorted, ABS Pump Motor 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 10,761

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 May 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0268 GMC Description

The Electronic Brake Control Module (EBCM) applies the ground needed for pump motor activation. The low side of the pump motor has a feedback circuit to the EBCM. When the pump motor is commanded OFF and at rest, feedback voltage is high. When the pump motor is winding down after being commanded ON and then OFF, feedback voltage is low. The EBCM monitors this feedback voltage in order to determine if the motor is functioning properly.

OBDII Code C0268 GMC - ABS Pump Motor Circuit Shorted - AutoCodes.com — C0268 GMC Code - ABS Pump Motor Circuit Shorted

What does this mean?

What are the Possible Causes of the DTC C0268 GMC?

Faulty ABS Pump Motor
ABS Pump Motor harness is open or shorted
ABS Pump Motor circuit poor electrical connection

How to Fix the DTC C0268 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 C0268 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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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 C0268 GMC Code

1. What are the common symptoms of OBDII code C0268 GMC (ABS Pump Motor Circuit Shorted)?

- Common symptoms include the ABS warning light on the dashboard, loss of ABS functionality, and potentially issues with the vehicle's stability control system.

2. What can cause the ABS Pump Motor Circuit to short in a GMC vehicle?

- Possible causes for the ABS Pump Motor Circuit shorting include damaged wiring, a faulty ABS pump motor, a blown fuse, or a malfunctioning ABS control module.

3. How can I diagnose the ABS Pump Motor Circuit short in my GMC vehicle?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the specific trouble code (C0268) and then conducting a thorough inspection of the ABS system components for any visible damage or signs of a short circuit.

4. Is it safe to drive my GMC with OBDII code C0268 indicating an ABS Pump Motor Circuit Shorted?

- It is not recommended to drive the vehicle with this issue as it can compromise the effectiveness of the ABS system, leading to potential safety hazards during braking or emergency maneuvers.

5. What are some repair tips for addressing OBDII code C0268 GMC (ABS Pump Motor Circuit Shorted)?

- Repair tips may include checking and repairing any damaged wiring, replacing the ABS pump motor if necessary, ensuring proper connection of electrical components, and resetting the ABS system after repairs are completed.

6. Can I reset the OBDII code C0268 GMC (ABS Pump Motor Circuit Shorted) without fixing the underlying issue?

- While you can clear the trouble code temporarily, it will likely reappear until the root cause of the ABS Pump Motor Circuit short is identified and repaired.

7. How much does it typically cost to repair OBDII code C0268 GMC (ABS Pump Motor Circuit Shorted)?

- The cost of repair can vary depending on the specific issue causing the short circuit, the labor rates in your area, and whether you choose to address the problem yourself or take it to a professional mechanic.

8. Will fixing OBDII code C0268 GMC (ABS Pump Motor Circuit Shorted) improve my vehicle's overall safety?

- Yes, repairing this issue is essential for maintaining the proper functionality of the ABS system, which plays a crucial role in enhancing vehicle stability and safety during braking.

9. Is OBDII code C0268 GMC (ABS Pump Motor Circuit Shorted) a common problem in GMC vehicles?

- While it may not be as common as some other OBDII codes, issues related to the ABS Pump Motor Circuit can occur in GMC vehicles, especially as they age and components wear out.

10. Can a DIY enthusiast with basic automotive knowledge repair OBDII code C0268 GMC (ABS Pump Motor Circuit Shorted)?

- Depending on the specific cause of the issue, DIY repairs may be possible for those with automotive knowledge and the necessary tools. However, complex electrical problems may require professional intervention.