AutoCodes – Scion – B1268 Scion

B1268 Scion Code - Back-Up Communication Bus Failure

Quick Answer

This Diagnostic Trouble Code (DTC) is output when +B (Battery) or GND (Ground) short occurs in the back-up communication bus. Common causes include Faulty Combination Switch, Combination Switch harness is open or shorted, Combination 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: B1268 Scion indicates Back-Up Communication Bus Failure.
Common causes: Common causes include Faulty Combination Switch, Combination Switch harness is open or shorted, Combination 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.

Save to My Repairs My Repairs

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

Code Popularity 918

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 Nov 29, 2024

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 B1268 Scion Description

This Diagnostic Trouble Code (DTC) is output when +B (Battery) or GND (Ground) short occurs in the back-up communication bus.

OBDII Code B1268 Scion - Back-Up Communication Bus Failure - AutoCodes.com — B1268 Scion Code - Back-Up Communication Bus Failure

What does this mean?

What are the Possible Causes of the DTC B1268 Scion?

Faulty Combination Switch
Combination Switch harness is open or shorted
Combination Switch circuit poor electrical connection

How to Fix the DTC B1268 Scion?

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 B1268 Scion 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 B1268 Scion code?

Need more information on how to fix the B1268 Scion code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1268 Scion 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 B1268 Scion Code

1. What are the common symptoms of OBDII code B1268 (Scion) - Back-Up Communication Bus Failure?

The common symptoms include issues with the vehicle's backup camera, rear sensors, or other backup-related systems not functioning properly.

2. What are some possible causes of OBDII code B1268 (Scion) - Back-Up Communication Bus Failure?

Possible causes include faulty wiring or connections in the backup system, a malfunctioning control module, or a problem with the backup camera itself.

3. How can I diagnose OBDII code B1268 (Scion) - Back-Up Communication Bus Failure?

Diagnosis typically involves using a scan tool to retrieve the code, checking the wiring and connections in the backup system, and testing the backup camera and related components for proper functionality.

4. Can I still drive my vehicle with OBDII code B1268 (Scion) - Back-Up Communication Bus Failure?

It is generally safe to drive the vehicle with this code, but it is recommended to address the issue promptly to ensure the proper functioning of the backup systems.

5. How can I repair OBDII code B1268 (Scion) - Back-Up Communication Bus Failure?

Repair options may include repairing or replacing damaged wiring, addressing any connection issues, replacing the backup camera or control module if necessary, and clearing the code with a scan tool.

6. Does OBDII code B1268 (Scion) - Back-Up Communication Bus Failure affect vehicle performance?

This code typically does not affect the overall performance of the vehicle, but it can impact the functionality of the backup systems and related components.

7. Are there any DIY tips for resolving OBDII code B1268 (Scion) - Back-Up Communication Bus Failure?

DIY tips may include checking and securing wiring connections, ensuring the backup camera lens is clean and unobstructed, and resetting the system by disconnecting the battery for a few minutes.

8. Can weather conditions affect OBDII code B1268 (Scion) - Back-Up Communication Bus Failure?

Extreme weather conditions, such as heavy rain or extreme temperatures, may exacerbate issues related to this code, particularly if there are existing wiring or connection problems in the backup system.

9. How long does it take to repair OBDII code B1268 (Scion) - Back-Up Communication Bus Failure?

The repair time can vary depending on the specific cause of the issue. Simple fixes like reconnecting a loose wire may take a short time, while replacing a faulty control module or camera could require more time.

10. Will OBDII code B1268 (Scion) - Back-Up Communication Bus Failure cause my vehicle to fail an emissions test?

This code is related to backup communication bus failure and is unlikely to cause the vehicle to fail an emissions test. However, it is still recommended to address and resolve the issue to maintain the proper functioning of the backup systems.