AutoCodes – Toyota – B15CC Toyota

B15CC Toyota Code - Backup Battery Failure

Quick Answer

This Diagnostic Trouble Code (DTC) is set when the Data Communication Module (DCM) (Telematics Transceiver) detects one of the following: Open or short in the Back-Up Battery (BUB) circuit, The BUB voltage drops or the BUB malfunctions, The BUB temperature is (temporarily) high. Common causes include Faulty Back-Up Battery (BUB), Back-Up Battery (BUB) harness is open or shorted, Back-Up Battery (BUB) 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: B15CC Toyota indicates Backup Battery Failure.
Common causes: Common causes include Faulty Back-Up Battery (BUB), Back-Up Battery (BUB) harness is open or shorted, Back-Up Battery (BUB) 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 7,455

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 21, 2019

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 B15CC Toyota Description

OBDII Code B15CC Toyota - Backup Battery Failure - AutoCodes.com — B15CC Toyota Code - Backup Battery Failure

What does this mean?

What are the Possible Causes of the DTC B15CC Toyota?

Faulty Back-Up Battery (BUB)
Back-Up Battery (BUB) harness is open or shorted
Back-Up Battery (BUB) circuit poor electrical connection
Faulty Data Communication Module (DCM) (Telematics Transceiver)

How to Fix the DTC B15CC Toyota?

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 B15CC Toyota 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 B15CC Toyota code?

Need more information on how to fix the B15CC Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B15CC Toyota 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 B15CC Toyota Code

1. What is OBDII code B15CC in a Toyota and what does it mean?

Code B15CC in a Toyota indicates a backup battery failure within the vehicle's system.

2. What are the common symptoms of a backup battery failure (code B15CC) in a Toyota?

Common symptoms include difficulty starting the vehicle, malfunctions in electronic components, and warning lights on the dashboard.

3. What are the possible causes of OBDII code B15CC in a Toyota?

Potential causes include a faulty backup battery, wiring issues, a damaged control module, or a malfunctioning sensor.

4. How can I diagnose a backup battery failure (code B15CC) in my Toyota?

Diagnosis typically involves using an OBDII scanner to read the specific code, checking the backup battery's voltage, inspecting wiring connections, and testing the control module.

5. Can I still drive my Toyota if OBDII code B15CC is present?

It is recommended to address the backup battery failure promptly to avoid potential issues with starting the vehicle or electronic component malfunctions.

6. How can I repair a backup battery failure (code B15CC) in my Toyota?

Repair options may include replacing the backup battery, repairing faulty wiring, replacing the control module, or addressing any sensor issues identified during diagnosis.

7. Is it safe to reset the OBDII code B15CC in my Toyota without fixing the underlying issue?

Resetting the code without addressing the backup battery failure may temporarily clear the warning light, but the issue will likely persist and could lead to further problems.

8. Can a DIY enthusiast fix OBDII code B15CC in a Toyota?

Depending on the cause of the backup battery failure, some DIY enthusiasts may be able to replace the backup battery or check wiring connections, but more complex issues may require professional assistance.

9. How much does it cost to repair OBDII code B15CC in a Toyota?

Costs can vary depending on the specific cause of the backup battery failure and the needed repairs, so it is advisable to get a diagnostic assessment from a qualified mechanic.

10. How often does OBDII code B15CC occur in Toyota vehicles?

Backup battery failures leading to code B15CC can occur sporadically and are not extremely common, but it is important to address the issue promptly to prevent further complications.