Engine-Codes.com
Engine-Codes – Generic – B2A37

B2A37 Code - Floor Lamp Output Circuit Open

Quick Answer

The diagnostic trouble code (DTC) B2A37 indicates an open circuit in the floor lamp output circuit. Common causes include Damaged or frayed wiring in the floor lamp circuit, Loose or corroded connections at the BCM or floor lamp sockets, A malfunctioning body control module (BCM) that fails to send the signal to activate the floor lamps. 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
B2A37 indicates Floor Lamp Output Circuit Open.
Common causes
Common causes include Damaged or frayed wiring in the floor lamp circuit, Loose or corroded connections at the BCM or floor lamp sockets, A malfunctioning body control module (BCM) that fails to send the signal to activate the floor lamps.
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 24, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B2A37 Description

The diagnostic trouble code (DTC) B2A37 indicates an open circuit in the floor lamp output circuit. This code is part of the body control module (BCM) diagnostics, which manages various lighting functions within the vehicle, including interior and exterior lights. An open circuit means that there is a break in the electrical path that prevents current from flowing to the floor lamps, which can lead to non-functioning lights.

OBDII Code B2A37 - Floor Lamp Output Circuit Open
B2A37 Code - Floor Lamp Output Circuit Open

Common Causes of B2A37

  1. Damaged or frayed wiring in the floor lamp circuit.
  2. Loose or corroded connections at the BCM or floor lamp sockets.
  3. A malfunctioning body control module (BCM) that fails to send the signal to activate the floor lamps.
  4. Blown fuses that interrupt the power supply to the floor lamp circuit.
  5. Water intrusion or moisture buildup causing corrosion in the electrical components.

Symptoms of B2A37

  1. Floor lamps do not illuminate when the vehicle is in operation or when doors are opened.
  2. Warning lights may appear on the dashboard indicating lighting issues.
  3. Other interior lights may also exhibit erratic behavior or fail to operate.
  4. Increased difficulty in entering or exiting the vehicle in low-light conditions.
  5. Possible intermittent operation of the floor lamps, flickering, or dimming.

How to Fix B2A37

  1. Visual Inspection: Begin by visually inspecting the wiring and connectors associated with the floor lamp circuit for any signs of damage, corrosion, or loose connections.
  2. Check Fuses: Inspect the vehicle's fuse box for any blown fuses related to the floor lamp circuit and replace them as necessary.
  3. Test the BCM: Use a multimeter to check the output from the BCM to ensure it is sending the correct voltage to the floor lamp circuit.
  4. Repair or Replace Wiring: If damaged wiring is found, repair or replace the affected sections to restore continuity in the circuit.
  5. Reprogram or Replace BCM: If the BCM is determined to be faulty, it may need to be reprogrammed or replaced to restore proper functionality to the floor lamp circuit.

Cost to Fix B2A37

The cost to repair the B2A37 code can vary widely depending on the underlying cause of the issue. On average, repairs might range from $100 to $500. This estimate includes parts such as wiring harnesses, connectors, or a BCM, which can significantly affect the total cost. Labor costs will also vary based on location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour; however, rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It is advisable to check local rates for a more precise estimate. Additionally, diagnostic time may add to the overall cost, especially if multiple systems need to be checked to pinpoint the issue.

Need more information about the B2A37 code?

Need more information on how to fix the B2A37 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2A37 code diagnosed by a professional: Find a repair shop in your area

Code B2A37 Information for Specific Makes

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 B2A37 Code

1. What does the OBDII code B2A37 mean?

B2A37 indicates an open circuit in the floor lamp output, meaning the electrical signal to the floor lamp is interrupted or disconnected.

2. What are the common symptoms of the B2A37 code?

Symptoms include non-functional floor lamps, dim or flickering lights, and possibly a warning light or error message on the dashboard.

3. What causes the B2A37 code to appear?

Common causes include a damaged or disconnected wiring harness, a blown fuse, a faulty floor lamp bulb, or a defective lighting control module.

4. Can I drive my car with the B2A37 code?

Yes, this code typically does not affect drivability. However, it’s best to repair the issue promptly for optimal vehicle functionality.

5. How do I diagnose the B2A37 code?

Start by checking the floor lamp bulb, inspecting the wiring harness for damage, testing the fuse, and using a multimeter to check for continuity in the circuit.

6. How do I fix the B2A37 code?

Repairs may involve replacing a blown fuse, repairing damaged wiring, reconnecting loose connectors, or replacing the defective floor lamp bulb or control module.

7. Can a bad lighting control module cause the B2A37 code?

Yes, a malfunctioning lighting control module can prevent the proper signal to the floor lamp, triggering this code.

8. Will resetting the code fix the problem?

Clearing the code without addressing the underlying issue will not fix the problem, and the code will likely return.

9. How much does it cost to repair the B2A37 code?

The cost depends on the specific cause, ranging from a few dollars for a bulb or fuse to higher costs if the wiring or control module needs replacement.

10. Can water damage cause the B2A37 code?

Yes, water intrusion can damage wiring, connectors, or the lighting control module, potentially causing this code to appear.

Discuss the causes and fixes for B2A37 OBDII Code

Submit a New Comment

Code B2A37 comments

No comments found for this page.