AutoCodes – GMC – B2601 GMC

B2601 GMC Code - DRL Relay Control Circuit Shorted To Ground

Quick Answer

The Daytime Running Lamps (DRL) Relay is controlled by the Body Control Module (BCM). Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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: B2601 GMC indicates DRL Relay Control Circuit Shorted To Ground.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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 815

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 Jan 07, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2601 GMC Description

The Daytime Running Lamps (DRL) Relay is controlled by the Body Control Module (BCM). Ignition positive voltage is applied to the DRL relay coil. The BCM grounds the DRL relay control circuit in order to turn on the DRL relay. When the DRL relay control circuit becomes shorted to ground, DTC B2601 is set.

OBDII Code B2601 GMC - DRL Relay Control Circuit Shorted To Ground - AutoCodes.com — B2601 GMC Code - DRL Relay Control Circuit Shorted To Ground

What does this mean?

What are the Possible Causes of the DTC B2601 GMC?

Faulty Body Control Module (BCM)
Body Control Module (BCM) harness is open or shorted
Body Control Module (BCM) circuit poor electrical connection

How to Fix the DTC B2601 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 B2601 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 B2601 GMC Code

1. What are common symptoms of OBDII code B2601 GMC (DRL Relay Control Circuit Shorted To Ground)?

- Common symptoms include non-functioning daytime running lights (DRLs), illuminated dashboard warning lights, and potential issues with other lighting systems.

2. What can cause the DRL Relay Control Circuit to short to ground?

- The DRL Relay Control Circuit may short to ground due to damaged wiring, a faulty relay, a malfunctioning control module, or a short circuit within the electrical system.

3. How can I diagnose the source of a DRL Relay Control Circuit short to ground?

- To diagnose the issue, you can perform a visual inspection of the wiring harness, test the DRL relay for proper function, check the control module, and use a multimeter to identify a short circuit.

4. Is it safe to continue driving with OBDII code B2601 active?

- It is not recommended to continue driving with the DRL Relay Control Circuit shorted to ground, as it can affect the proper functioning of your vehicle's lighting systems and potentially lead to safety hazards.

5. Can I repair the DRL Relay Control Circuit shorted to ground issue myself?

- Depending on your level of automotive knowledge and experience, you may be able to repair the issue yourself by identifying and addressing the root cause, such as repairing damaged wiring or replacing a faulty relay.

6. Will resetting the OBDII code B2601 clear the issue?

- Resetting the OBDII code may temporarily clear the warning light, but it will not fix the underlying problem causing the DRL Relay Control Circuit to short to ground. Proper diagnosis and repair are necessary.

7. How much does it typically cost to repair the DRL Relay Control Circuit shorted to ground issue?

- The cost of repairing the DRL Relay Control Circuit shorted to ground can vary depending on the specific cause of the issue, but it may range from a few hundred to a few thousand dollars, including parts and labor.

8. Are there any preventive measures to avoid encountering OBDII code B2601 in the future?

- To prevent issues with the DRL Relay Control Circuit, you can regularly inspect the vehicle's wiring harness, maintain proper electrical system care, and address any lighting system malfunctions promptly.

9. Can a faulty DRL Relay Control Circuit affect other electrical components in the vehicle?

- Yes, a faulty DRL Relay Control Circuit can potentially affect other electrical components in the vehicle, especially those related to the lighting systems or the control module.

10. How long does it typically take to repair the DRL Relay Control Circuit shorted to ground issue?

- The repair time for the DRL Relay Control Circuit issue can vary based on the complexity of the problem and the availability of parts, but it may take a few hours to a full day for a professional technician to address the issue thoroughly.