AutoCodes – Cadillac – B2585 Cadillac

B2585 Cadillac Code - Park Lamp Control Circuit

Quick Answer

When the Body Control Module (BCM) receives a ground signal from the headlamp switch commanding to illuminate the park lamps, the BCM will energize the park lamp relay by grounding the park lamp relay control circuit. Common causes include Faulty Park Lamp Relay, Park Lamp Relay harness is open or shorted, Park Lamp 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: B2585 Cadillac indicates Park Lamp Control Circuit.
Common causes: Common causes include Faulty Park Lamp Relay, Park Lamp Relay harness is open or shorted, Park Lamp 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 1,281

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 Dec 29, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2585 Cadillac Description

When the Body Control Module (BCM) receives a ground signal from the headlamp switch commanding to illuminate the park lamps, the BCM will energize the park lamp relay by grounding the park lamp relay control circuit. The Diagnostic Trouble Code (DTC) sets when the park lamp relay control circuit is open or shorted to ground.

OBDII Code B2585 Cadillac - Park Lamp Control Circuit - AutoCodes.com — B2585 Cadillac Code - Park Lamp Control Circuit

What does this mean?

What are the Possible Causes of the DTC B2585 Cadillac?

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

How to Fix the DTC B2585 Cadillac?

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 B2585 Cadillac 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 B2585 Cadillac Code

1. What are the common symptoms of OBDII code B2585 Cadillac (Park Lamp Control Circuit)?

- Common symptoms include inoperative park lamps, dim or flickering park lamps, or a warning light on the dashboard.

2. What are the possible causes of OBDII code B2585 Cadillac?

- Potential causes include a faulty park lamp switch, damaged wiring or connectors, a blown fuse, or a malfunctioning body control module.

3. How can I diagnose the Park Lamp Control Circuit issue in my Cadillac?

- Start by checking the park lamp fuse, inspecting the wiring and connectors for any damage, and testing the park lamp switch using a multimeter. If needed, consult a professional for further diagnosis.

4. Can I still drive my Cadillac with OBDII code B2585 present?

- It is generally safe to drive with this code, but it's important to address the issue promptly to ensure proper functioning of the park lamps for visibility and safety.

5. How can I repair OBDII code B2585 in my Cadillac?

- Repair options may include replacing the park lamp switch, repairing or replacing damaged wiring or connectors, checking and replacing the fuse if necessary, or reprogramming the body control module.

6. Is it possible to reset OBDII code B2585 Cadillac without fixing the underlying issue?

- It is possible to clear the code temporarily, but it will likely return until the root cause of the Park Lamp Control Circuit problem is resolved.

7. Will fixing OBDII code B2585 Cadillac require specialized tools?

- Basic tools like a multimeter, wiring diagram, and common hand tools may be sufficient for diagnosing and repairing this code. However, specialized tools may be needed for specific tasks.

8. Can extreme weather conditions affect the Park Lamp Control Circuit in a Cadillac?

- Yes, extreme temperatures or moisture can potentially cause electrical issues affecting the park lamp circuit, so it's important to keep the vehicle protected and maintained.

9. How long does it typically take to repair OBDII code B2585 Cadillac?

- The repair time can vary depending on the exact cause of the issue, the availability of parts, and the expertise of the person performing the repair. It could range from a quick fix to a more involved process.

10. Are there any preventive measures to avoid OBDII code B2585 in a Cadillac?

- Regularly inspecting the park lamp system, keeping the electrical components clean and dry, and addressing any issues promptly can help prevent the occurrence of this code.