AutoCodes – Chevrolet – B2602 Chevrolet

B2602 Chevrolet 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 Daytime Running Lamps (DRL) Relay, Daytime Running Lamps (DRL) Relay harness is open or shorted, Daytime Running Lamps (DRL) Relay 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: B2602 Chevrolet indicates DRL Relay Control Circuit Shorted To Ground.
Common causes: Common causes include Faulty Daytime Running Lamps (DRL) Relay, Daytime Running Lamps (DRL) Relay harness is open or shorted, Daytime Running Lamps (DRL) Relay 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 7,117

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 B2602 Chevrolet 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 without being commanded on by the BCM, DTC B2602 is set.

OBDII Code B2602 Chevrolet - DRL Relay Control Circuit Shorted To Ground - AutoCodes.com — B2602 Chevrolet Code - DRL Relay Control Circuit Shorted To Ground

What does this mean?

What are the Possible Causes of the DTC B2602 Chevrolet?

Faulty Daytime Running Lamps (DRL) Relay
Daytime Running Lamps (DRL) Relay harness is open or shorted
Daytime Running Lamps (DRL) Relay circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B2602 Chevrolet?

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 B2602 Chevrolet 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 B2602 Chevrolet Code

1. What are the common symptoms of OBDII code B2602 Chevrolet (DRL Relay Control Circuit Shorted To Ground)?

- Common symptoms include the daytime running lights (DRL) not functioning properly, flickering or staying on constantly, or the DRL indicator illuminated on the dashboard.

2. What are the possible causes of OBDII code B2602 Chevrolet?

- The code B2602 can be triggered by a short to ground in the DRL relay control circuit, a faulty DRL relay, damaged wiring, or a malfunctioning control module.

3. How can I diagnose the DRL Relay Control Circuit Shorted To Ground issue?

- Use a multimeter to test the continuity of the wiring in the DRL circuit, inspect the DRL relay for any signs of damage, and check for any visible wiring issues or connections that may be causing the short to ground.

4. Can I drive my Chevrolet with the OBDII code B2602 present?

- It is not recommended to drive your vehicle with the B2602 code as it may lead to safety concerns related to the daytime running lights not functioning correctly.

5. How can I repair the DRL Relay Control Circuit Shorted To Ground issue?

- Repair options include replacing the faulty DRL relay, repairing damaged wiring or connections, and resetting the control module after fixing the short to ground.

6. Will resetting the OBDII code B2602 Chevrolet resolve the issue?

- Resetting the 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.

7. Can a DIY enthusiast fix the OBDII code B2602 issue?

- Depending on your experience and access to tools, a DIY enthusiast can attempt to diagnose and repair the DRL relay control circuit shorted to ground issue. However, professional help may be needed for complex repairs.

8. How much does it cost to repair the OBDII code B2602 Chevrolet at a dealership or repair shop?

- The cost of repairing the B2602 code can vary depending on the extent of the damage and the labor rates of the dealership or repair shop. It is advisable to get a diagnostic and repair estimate before proceeding.

9. Are there any preventive measures to avoid the DRL Relay Control Circuit Shorted To Ground issue in the future?

- To prevent the B2602 code from reoccurring, regularly inspect the DRL system for any signs of wear or damage, conduct routine maintenance checks, and address any electrical issues promptly.

10. Will the OBDII code B2602 Chevrolet cause my vehicle to fail an emissions test?

- The B2602 code is related to the daytime running lights and does not affect emissions. However, it is best to address any OBDII codes before an emissions test to ensure overall vehicle health and compliance.