AutoCodes – Cadillac – B2815 Cadillac

B2815 Cadillac 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 Cadillac 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 538

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

What does this mean?

What are the Possible Causes of the DTC B2815 Cadillac?

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 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 B2815 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 B2815 Cadillac Code

1. What are the common symptoms of OBDII code B2815 Cadillac?

The common symptoms of OBDII code B2815 Cadillac include malfunctioning steering wheel controls, unresponsive buttons, and warning lights on the dashboard.

2. What causes the OBDII code B2815 Cadillac to trigger?

The OBDII code B2815 Cadillac is triggered when the steering wheel controls detect an illegal resistance value, usually due to a fault in the wiring or a problem with the control module.

3. How can I diagnose the OBDII code B2815 Cadillac?

Diagnosing the OBDII code B2815 Cadillac involves using a diagnostic scanner to retrieve the code, checking the wiring connections to the steering wheel controls, and testing the resistance values of the components.

4. Can I still drive my Cadillac with the OBDII code B2815?

It is not recommended to drive your Cadillac with the OBDII code B2815 present, as it may affect the proper functioning of the steering wheel controls, potentially compromising your safety on the road.

5. How can I repair the OBDII code B2815 Cadillac?

To repair the OBDII code B2815 Cadillac, you may need to replace faulty wiring, repair any loose connections, or replace the steering wheel control module if necessary.

6. Is it safe to reset the OBDII code B2815 Cadillac on my own?

While you can attempt to reset the OBDII code B2815 Cadillac using a diagnostic scanner, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

7. Are there any DIY tips to troubleshoot the OBDII code B2815 Cadillac?

You can start troubleshooting the OBDII code B2815 Cadillac by checking the wiring harness for damage, ensuring all connections are secure, and testing the resistance values of the components with a multimeter.

8. Will the OBDII code B2815 Cadillac affect my vehicle's performance?

The OBDII code B2815 Cadillac may not directly affect your vehicle's performance, but it can impact the functionality of the steering wheel controls, leading to inconvenience and potential safety concerns.

9. How much does it cost to repair the OBDII code B2815 Cadillac at a dealership?

The cost of repairing the OBDII code B2815 Cadillac at a dealership can vary depending on the extent of the issue, but it may involve labor costs, parts replacement, and diagnostic fees.

10. Can a professional mechanic help me fix the OBDII code B2815 Cadillac?

Yes, a professional mechanic with experience in diagnosing and repairing OBDII codes like B2815 Cadillac can help you identify the root cause of the issue and perform the necessary repairs to resolve it effectively.