AutoCodes – Cadillac – B273A Cadillac

B273A Cadillac Code - Hill Descent Control Switch

Quick Answer

The Body Control Module (BCM) monitors the signal circuit from the Hill Descent Control Switch. Common causes include Faulty Multifunction Switch Instrument Panel, Multifunction Switch Instrument Panel harness is open or shorted, Multifunction Switch Instrument Panel 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: B273A Cadillac indicates Hill Descent Control Switch.
Common causes: Common causes include Faulty Multifunction Switch Instrument Panel, Multifunction Switch Instrument Panel harness is open or shorted, Multifunction Switch Instrument Panel 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 583

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 30, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B273A Cadillac Description

The Body Control Module (BCM) monitors the signal circuit from the Hill Descent Control Switch. The hill descent switch is a momentary switch that is normally open. When the hill descent control switch is pressed once, the body control module will request the electronic brake control module via serial data to disable or enable the hill descent control. When activated, the switch grounds the hill descent control system signal circuit. The electronic brake control module then enables or disables the hill descent control system. The electronic brake control module will request the instrument cluster via serial data to turn the hill descent indicator ON or OFF to notify the driver.

OBDII Code B273A Cadillac - Hill Descent Control Switch - AutoCodes.com — B273A Cadillac Code - Hill Descent Control Switch

What does this mean?

What are the Possible Causes of the DTC B273A Cadillac?

Faulty Multifunction Switch Instrument Panel
Multifunction Switch Instrument Panel harness is open or shorted
Multifunction Switch Instrument Panel circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B273A 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 B273A 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.

Need more information about the B273A Cadillac code?

Need more information on how to fix the B273A Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B273A Cadillac code diagnosed by a professional: Find a repair shop in your area

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 B273A Cadillac Code

1. What does the OBDII code B273A mean for a Cadillac?

The code B273A indicates an issue with the Hill Descent Control (HDC) switch circuit, which may affect the functionality of the HDC system.

2. What are the symptoms of code B273A in a Cadillac?

Common symptoms include the Hill Descent Control system not activating, a warning light on the dashboard, and reduced control during downhill driving.

3. What causes the B273A code to appear in a Cadillac?

Causes can include a faulty HDC switch, damaged wiring or connectors, or an issue with the HDC system's control module.

4. Can I drive my Cadillac with the B273A code active?

Yes, you can drive the vehicle, but the Hill Descent Control system may not function, which could impact safety during steep downhill driving.

5. How do I diagnose the B273A code on a Cadillac?

Use an OBDII scanner to confirm the code, inspect the HDC switch and wiring for damage, and check the connectors for loose or corroded connections.

6. How do I fix the B273A code on a Cadillac?

Repairs may include replacing the HDC switch, repairing or replacing damaged wiring, or resetting the control module if necessary.

7. What tools are needed to repair the B273A code in a Cadillac?

You may need an OBDII scanner, a multimeter for checking electrical continuity, and basic tools to access and replace the HDC switch or wiring.

8. How much does it cost to repair the B273A code on a Cadillac?

Costs vary depending on the issue, but replacing the HDC switch typically costs $50â€“$150, plus labor if done professionally.

9. Can a malfunctioning HDC switch cause other problems in a Cadillac?

While it primarily affects the Hill Descent Control system, it could also trigger additional warning lights or codes if tied to other systems.

10. Is resetting the control module enough to fix the B273A code?

Resetting the module may clear the code temporarily, but addressing the root cause, such as a faulty switch or wiring, is necessary for a permanent fix.