AutoCodes – Toyota – B1268 Toyota

B1268 Toyota 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 Toyota 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.

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Code Popularity 1,652

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

What does this mean?

What are the Possible Causes of the DTC B1268 Toyota?

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

How to Fix the DTC B1268 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 B1268 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.

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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 B1268 Toyota Code

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

- Common symptoms include issues with the backup camera, rear parking sensors, and other backup assist systems not functioning properly.

2. What are the possible causes of OBDII code B1268 Toyota?

- The code B1268 Toyota is typically caused by a faulty backup camera, damaged wiring, or a malfunctioning control module.

3. How can I diagnose OBDII code B1268 Toyota?

- To diagnose the code B1268 Toyota, you can use an OBDII scanner to read and interpret the code. Additionally, you can visually inspect the wiring and components related to the backup communication system.

4. What should I check first when troubleshooting OBDII code B1268 Toyota?

- It is recommended to first check the condition of the backup camera and its wiring connections. Ensure that there are no visible damages or loose connections causing the communication failure.

5. Can OBDII code B1268 Toyota be fixed without professional help?

- If you are experienced with automotive repairs and have the necessary tools, you may be able to fix the issue related to code B1268 Toyota on your own. However, seeking professional help is advisable for accurate diagnosis and repair.

6. Are there any common repair tips for OBDII code B1268 Toyota?

- Common repair tips include checking and repairing any damaged wiring, replacing the backup camera if necessary, and resetting the control module to clear the code.

7. Will OBDII code B1268 Toyota cause any safety concerns while driving?

- OBDII code B1268 Toyota is related to the backup communication bus failure and typically does not pose immediate safety concerns while driving. However, it is important to address the issue promptly to ensure the proper functioning of backup assist systems.

8. Can resetting the OBDII code B1268 Toyota resolve the issue temporarily?

- Resetting the code may temporarily clear the warning light, but it is important to diagnose and address the underlying cause of the code to prevent it from reoccurring.

9. How long does it typically take to repair OBDII code B1268 Toyota?

- The repair time for OBDII code B1268 Toyota can vary depending on the exact cause of the issue and the complexity of the repair. It may take anywhere from a few hours to a full day to diagnose and fix the problem.

10. Is it necessary to replace the control module for OBDII code B1268 Toyota?

- In some cases, replacing the control module may be necessary to resolve OBDII code B1268 Toyota, especially if the module is found to be faulty or damaged beyond repair.