AutoCodes – Generic – B2580

B2580 Code - Headlamp High Beam Control Circuit

Quick Answer

The high beam and flash-to-pass functions are contained within the turn signal/multifunction switch. Common causes include Faulty Headlamp High Beam Relay, Headlamp High Beam Relay harness is open or shorted, Headlamp High Beam 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: B2580 indicates Headlamp High Beam Control Circuit.
Common causes: Common causes include Faulty Headlamp High Beam Relay, Headlamp High Beam Relay harness is open or shorted, Headlamp High Beam 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 17,965

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 26, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B2580 Description

The high beam and flash-to-pass functions are contained within the turn signal/multifunction switch. The Body Control Module (BCM) provides the turn signal/multifunction switch with two signal circuits, the high beam signal circuit, and the flash-to-pass signal circuit. When the low beam headlamps are ON and the turn signal/multifunction switch is placed in the high beam position, ground is applied to the BCM through the high beam signal circuit. The BCM responds to the high beam request by applying ground to the high beam relay control circuit which energizes the high beam relay. With the high beam relay energized, the switch contacts close allowing battery voltage to flow through the high beam fuse to the high beam control circuits illuminating the high beam headlamps.

OBDII Code B2580 - Headlamp High Beam Control Circuit - AutoCodes.com — B2580 Code - Headlamp High Beam Control Circuit

What does this mean?

What are the Possible Causes of the DTC B2580?

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

How to Fix the DTC B2580?

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 does this mean?

Code Tech Notes

B2580:01 High Beam Control Circuit Short to Battery
B2580:02 High Beam Control Circuit Short to Ground
B2580:04 High Beam Control Circuit Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2580 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 Help with the Code?

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Information for Specific Makes

B2580 Buick — Headlamp High Beam Control Circuit
B2580 Cadillac — Headlamp High Beam Control Circuit
B2580 Chevrolet — Headlamp High Beam Control Circuit
B2580 Chrysler — Driver Window Position Sensor No Signal
B2580 Dodge — Driver Window Position Sensor No Signal
B2580 GMC — Headlamp High Beam Control Circuit
B2580 Jeep — Driver Window Position Sensor No Signal
B2580 RAM — Driver Window Position Sensor No Signal

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 B2580 Code

1. What are common symptoms of OBDII code B2580 (Headlamp High Beam Control Circuit)?

- Common symptoms include high beam headlights not functioning properly, dim or flickering high beams, or high beams stuck in the on position.

2. What are the possible causes of OBDII code B2580?

- Possible causes include a faulty headlight high beam control switch, a defective high beam relay, wiring issues, or a malfunctioning body control module.

3. How can I diagnose the cause of OBDII code B2580?

- To diagnose the issue, you can start by visually inspecting the wiring and connections related to the high beam control circuit. Use a multimeter to test the components for proper voltage and continuity.

4. Can a blown fuse cause OBDII code B2580 to appear?

- Yes, a blown fuse related to the high beam control circuit can trigger OBDII code B2580. Check and replace any blown fuses as part of your troubleshooting process.

5. Is it safe to continue driving with OBDII code B2580 present?

- It is not recommended to drive with OBDII code B2580 present, as it can affect the proper functioning of your vehicle's high beam headlights, compromising visibility and safety.

6. How can I repair OBDII code B2580 myself?

- Depending on the cause, you may be able to repair OBDII code B2580 yourself by replacing the faulty high beam control switch, relay, or repairing any damaged wiring. If unsure, seek professional help.

7. Do I need specialized tools to fix OBDII code B2580?

- Basic tools like a multimeter, screwdrivers, and possibly a soldering iron may be needed to diagnose and repair OBDII code B2580. Specialized tools may be required for more complex repairs.

8. Can weather conditions impact OBDII code B2580?

- Extreme weather conditions like moisture or corrosion can affect the high beam control circuit, potentially leading to OBDII code B2580. Keep this in mind when diagnosing the issue.

9. Will resetting the OBDII system clear code B2580?

- Resetting the OBDII system may temporarily clear code B2580, but if the underlying issue is not addressed, the code is likely to reappear. It's important to diagnose and fix the root cause.

10. How much does it typically cost to repair OBDII code B2580 at a professional auto repair shop?

- The cost of repairing OBDII code B2580 at a professional auto repair shop can vary depending on the cause of the issue, the labor rates in your area, and the cost of any replacement parts needed. Expect costs to range from $100 to $300 or more.