AutoCodes – Generic – B2615

B2615 Code - Passenger Compartment Dimming 2 Circuit

Quick Answer

The Body Control Module (BCM) applies battery voltage to the dome/reading lamps through the dome/reading lamp control circuit. Common causes include Faulty Courtesy Lamp, Courtesy Lamp harness is open or shorted, Courtesy Lamp 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: B2615 indicates Passenger Compartment Dimming 2 Circuit.
Common causes: Common causes include Faulty Courtesy Lamp, Courtesy Lamp harness is open or shorted, Courtesy Lamp 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 11,405

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 29, 2023

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code B2615 Description

The Body Control Module (BCM) applies battery voltage to the dome/reading lamps through the dome/reading lamp control circuit. When any door is opened, the jam switch contacts close and the BCM receives a door-ajar input. If the BCM receives a door lock or unlock input or a rear hatch open input, the BCM will activate the dome/reading lamp control circuit, providing battery voltage to dome/reading lamps. In the event that any of these courtesy lamps were to remain illuminated for more than 10 minutes with the ignition switch in the OFF position, the BCM will deactivate the courtesy lamp control circuit to prevent total battery discharge. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a short to ground or open in the dome lamps control circuit terminal.

OBDII Code B2615 - Passenger Compartment Dimming 2 Circuit - AutoCodes.com — B2615 Code - Passenger Compartment Dimming 2 Circuit

What does this mean?

What are the Possible Causes of the DTC B2615?

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

How to Fix the DTC B2615?

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

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2615 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 B2615 code?

Need more information on how to fix the B2615 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2615 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2615 Buick — Passenger Compartment Dimming 2 Circuit
B2615 Cadillac — Passenger Compartment Dimming 2 Circuit
B2615 Chevrolet — Passenger Compartment Dimming 2 Circuit
B2615 GMC — Passenger Compartment Dimming 2 Circuit
B2615 Infiniti — Blower Relay Circuit
B2615 Nissan — Blower Relay Circuit

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 B2615 Code

1. What are the common symptoms of OBDII code B2615 (Passenger Compartment Dimming 2 Circuit)?

- Common symptoms include interior lights not dimming properly, inconsistent dimming behavior, or complete failure of the dimming function in the passenger compartment.

2. What are the possible causes of OBDII code B2615?

- Possible causes include a faulty dimming control module, wiring issues in the dimming circuit, a defective dimming switch, or a malfunctioning light sensor.

3. How can I diagnose the root cause of OBDII code B2615?

- To diagnose the issue, you can use a diagnostic scan tool to read the code and check for any related trouble codes. Additionally, inspect the dimming control module, dimming switch, and associated wiring for any visible damage or loose connections.

4. How can I repair OBDII code B2615?

- Repair methods may include replacing the dimming control module, fixing or replacing damaged wiring, replacing the dimming switch, or recalibrating the light sensor. Ensure the repairs are done correctly to prevent recurring issues.

5. Can OBDII code B2615 be fixed at home, or should I seek professional help?

- While some DIY enthusiasts may attempt to address the issue at home, it is recommended to seek professional help, especially if you are not familiar with automotive electrical systems. A professional technician can accurately diagnose and repair the problem.

6. Will OBDII code B2615 cause any harm if left unaddressed?

- Leaving OBDII code B2615 unresolved may not cause immediate harm to the vehicle, but it can lead to inconvenience due to the malfunctioning interior lighting dimming function. It is advisable to address the issue to maintain optimal functionality.

7. Can a simple reset of the vehicle's computer clear OBDII code B2615?

- A simple reset of the vehicle's computer may temporarily clear the code, but if the underlying issue causing OBDII code B2615 is not resolved, the code is likely to reappear. It is essential to diagnose and fix the root cause of the problem.

8. Is OBDII code B2615 a common issue in certain vehicle models?

- OBDII code B2615 related to Passenger Compartment Dimming 2 Circuit can be more common in vehicles equipped with advanced interior lighting systems that offer dimming functions. However, the occurrence of this code can vary across different vehicle makes and models.

9. Are there any preventive measures to avoid OBDII code B2615 from occurring?

- Regularly inspecting the interior lighting system, keeping an eye out for dimming irregularities, and addressing any issues promptly can help prevent OBDII code B2615 from occurring. Maintaining the vehicle's electrical components in good condition can also be beneficial.

10. How long does it typically take to repair OBDII code B2615?

- The repair time for OBDII code B2615 can vary depending on the exact cause of the issue, the complexity of the repair, and the availability of parts. Simple fixes may be completed in a relatively short time, while more intricate repairs may take longer.