AutoCodes – Buick – B2815 Buick

B2815 Buick Code - Steering Wheel Controls Illegal Resistance Value

Quick Answer

The Steering Wheel Controls are momentary contact switches that connect a series of resistors so that each switch selection corresponds to a fixed resistance value. Common causes include Faulty Steering Wheel Control (SWC) Switch, Steering Wheel Control (SWC) Switch harness is open or shorted, Steering Wheel Control (SWC) Switch 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: B2815 Buick indicates Steering Wheel Controls Illegal Resistance Value.
Common causes: Common causes include Faulty Steering Wheel Control (SWC) Switch, Steering Wheel Control (SWC) Switch harness is open or shorted, Steering Wheel Control (SWC) Switch 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 558

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 Feb 13, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2815 Buick Description

The Steering Wheel Controls are momentary contact switches that connect a series of resistors so that each switch selection corresponds to a fixed resistance value. The Body Control Module (BCM) determines which switch has been pressed by the voltage drop across the corresponding resistance value. The BCM supplies voltage to the steering wheel controls through the rear wiper/washer switch supply voltage circuit. The BCM monitors the switch voltage on the remote radio control signal circuit. The Diagnostic Trouble Code (DTC) sets when the BCM detects a switch voltage that is higher than normal.

OBDII Code B2815 Buick - Steering Wheel Controls Illegal Resistance Value - AutoCodes.com — B2815 Buick Code - Steering Wheel Controls Illegal Resistance Value

What does this mean?

What are the Possible Causes of the DTC B2815 Buick?

Faulty Steering Wheel Control (SWC) Switch
Steering Wheel Control (SWC) Switch harness is open or shorted
Steering Wheel Control (SWC) Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B2815 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 B2815 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.

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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 B2815 Buick Code

1. What are the common symptoms of OBDII code B2815 in a Buick related to steering wheel controls?

The common symptoms include non-functional steering wheel controls, such as volume adjustment, cruise control, and radio settings.

2. What does the OBDII code B2815 indicate in a Buick?

The code B2815 indicates an illegal resistance value detected in the steering wheel controls system.

3. What are the possible causes of OBDII code B2815 in a Buick?

Possible causes include damaged wiring in the steering wheel controls, a faulty steering wheel control module, or a defective clock spring.

4. How can I diagnose the issue related to code B2815 in my Buick?

You can start by checking the wiring harness for any visible damage, testing the resistance values of the steering wheel controls, and conducting a thorough inspection of the control module and clock spring.

5. Can I repair the steering wheel controls issue related to code B2815 on my own?

Depending on your automotive repair skills, you may be able to replace a damaged wiring harness or a faulty control module. However, more complex issues like a defective clock spring may require professional diagnosis and repair.

6. Is it safe to continue driving my Buick with OBDII code B2815 triggered?

While the vehicle may still be operational, it is recommended to address the issue promptly to ensure the proper functioning of the steering wheel controls and overall safety of the vehicle.

7. How much does it typically cost to repair OBDII code B2815 in a Buick?

The cost of repair can vary depending on the specific cause of the issue. Simple repairs like fixing wiring may cost less, while replacing a control module or clock spring can be more expensive.

8. Are there any preventive measures to avoid encountering code B2815 in my Buick?

Regularly inspecting the steering wheel controls system, avoiding harsh handling of the controls, and addressing any electrical issues promptly can help prevent the occurrence of code B2815.

9. Can code B2815 in a Buick be triggered by other underlying problems?

While code B2815 is specifically related to steering wheel controls, it is possible for other electrical or communication issues within the vehicle to indirectly trigger this code. A comprehensive diagnostic check is recommended.

10. How long does it typically take to repair OBDII code B2815 in a Buick?

The repair time can vary based on the complexity of the issue and the availability of parts. Simple repairs may take a few hours, while more involved repairs could require a day or more.