B2585 Buick 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 Buick 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.
Code B2585 Buick Description
What are the Possible Causes of the DTC B2585 Buick?
- 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 Buick?
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 Buick 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.
Need more information about the B2585 Buick code?
Need more information on how to fix the B2585 Buick code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B2585 Buick code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B2585 Buick Code
1. What does the OBDII code B2585 mean on a Buick?
The B2585 code indicates a fault in the Park Lamp Control Circuit, which affects the vehicle's exterior parking light system.
2. What are the common symptoms of the B2585 code?
Symptoms may include parking lights not turning on, flickering lights, or dashboard warnings related to the lighting system.
3. What causes the B2585 Park Lamp Control Circuit code to appear?
Common causes include a blown fuse, faulty park lamp relay, damaged wiring, or a malfunctioning body control module (BCM).
4. Can I drive my Buick with the B2585 code active?
While the car may still be drivable, impaired parking lights can reduce visibility and increase the risk of accidents, especially at night.
5. How do I diagnose the B2585 code?
Start by checking the park lamp fuse and relay, inspect wiring for damage or corrosion, and use a scan tool to test the body control module.
6. How do I fix the B2585 code on my Buick?
Repairs may include replacing a blown fuse, repairing or replacing damaged wiring, swapping out a faulty relay, or reprogramming/replacing the BCM.
7. What tools do I need to troubleshoot the B2585 code?
You'll need a multimeter to check electrical connections, a fuse puller, and an OBDII scan tool to confirm and clear the code after repairs.
8. How much does it cost to fix the B2585 code?
Repair costs can range from $20 for a fuse or relay replacement to $500 or more if the BCM needs replacement or reprogramming.
9. Can a weak battery cause the B2585 code?
Yes, a weak or failing battery can cause erratic electrical behavior, potentially triggering this code.
10. Will clearing the B2585 code with a scan tool fix the problem?
Clearing the code will reset the warning, but the underlying issue must be resolved to prevent the code from returning.
Discuss the causes and fixes for B2585 Buick OBDII Code
Code B2585 Buick comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
