AutoCodes – Chevrolet – B1446 Chevrolet

B1446 Chevrolet Code - Replace Backup Power Source

Quick Answer

The Back-up Battery (BUB) provides voltage to the Communication Interface Module (CIM), to be able to successfully place a call in the event of a main battery disconnect during a collision event. Common causes include Faulty Communication Interface Module (CIM), Communication Interface Module (CIM) harness is open or shorted, Communication Interface Module (CIM) 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: B1446 Chevrolet indicates Replace Backup Power Source.
Common causes: Common causes include Faulty Communication Interface Module (CIM), Communication Interface Module (CIM) harness is open or shorted, Communication Interface Module (CIM) 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 7,943

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 Apr 10, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1446 Chevrolet Description

OBDII Code B1446 Chevrolet - Replace Backup Power Source - AutoCodes.com — B1446 Chevrolet Code - Replace Backup Power Source

What does this mean?

What are the Possible Causes of the DTC B1446 Chevrolet?

Faulty Communication Interface Module (CIM)
Communication Interface Module (CIM) harness is open or shorted
Communication Interface Module (CIM) circuit poor electrical connection

How to Fix the DTC B1446 Chevrolet?

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 B1446 Chevrolet 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 B1446 Chevrolet code?

Need more information on how to fix the B1446 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1446 Chevrolet 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 B1446 Chevrolet Code

1. What are the common symptoms of OBDII code B1446 in a Chevrolet vehicle?

The common symptoms of OBDII code B1446 include issues with the power liftgate operation, such as failure to open or close properly.

2. What does the OBDII code B1446 in a Chevrolet indicate?

OBDII code B1446 in a Chevrolet indicates a fault with the backup power source for the power liftgate module.

3. What are the possible causes of OBDII code B1446 in a Chevrolet?

Possible causes of OBDII code B1446 in a Chevrolet include a faulty power liftgate module, damaged wiring, or a drained backup power source.

4. How can I diagnose the issue causing OBDII code B1446 in my Chevrolet?

A thorough inspection of the power liftgate module, wiring connections, and backup power source can help diagnose the issue causing OBDII code B1446 in a Chevrolet.

5. Can I continue driving my Chevrolet with OBDII code B1446?

It is generally safe to continue driving your Chevrolet with OBDII code B1446, but it is recommended to address the issue promptly to ensure the proper functioning of the power liftgate.

6. How can I repair OBDII code B1446 in my Chevrolet?

To repair OBDII code B1446 in a Chevrolet, you may need to replace the backup power source for the power liftgate module and ensure all connections are secure and free of damage.

7. Is it possible to reset OBDII code B1446 in a Chevrolet without replacing any parts?

Resetting OBDII code B1446 in a Chevrolet may temporarily clear the code, but it is recommended to address the underlying issue by inspecting and repairing the backup power source.

8. Can a DIY enthusiast fix OBDII code B1446 in a Chevrolet?

A DIY enthusiast with knowledge of automotive electrical systems may be able to diagnose and repair OBDII code B1446 in a Chevrolet by following the manufacturer's repair guidelines.

9. How long does it take to repair OBDII code B1446 in a Chevrolet?

The time it takes to repair OBDII code B1446 in a Chevrolet can vary depending on the extent of the issue and the availability of replacement parts, but it is typically a relatively quick fix.

10. Are there any preventive measures to avoid OBDII code B1446 in a Chevrolet?

Regularly checking the power liftgate system, maintaining the backup power source, and addressing any issues promptly can help prevent OBDII code B1446 from occurring in a Chevrolet.