AutoCodes – Lexus – B1206 Lexus

B1206 Lexus Code - Power Window Master Switch Communication Stop

Quick Answer

This Diagnostic Trouble Code (DTC) is stored when Local Interconnect Network (LIN) communication between the power window regulator master switch assembly and main body ECU (instrument panel junction block assembly) stops for more than 10 seconds. Common causes include Faulty Power Window Master Switch, Power Window Master Switch harness is open or shorted, Power Window Master Switch circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: B1206 Lexus indicates Power Window Master Switch Communication Stop.
Common causes: Common causes include Faulty Power Window Master Switch, Power Window Master Switch harness is open or shorted, Power Window Master Switch circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 9,495

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Nov 19, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1206 Lexus Description

This Diagnostic Trouble Code (DTC) is stored when Local Interconnect Network (LIN) communication between the power window regulator master switch assembly and main body ECU (instrument panel junction block assembly) stops for more than 10 seconds. The DTC will set when there is no communication between the power window regulator master switch assembly and the main body ECU (instrument panel junction block assembly) for more than 10 seconds.

OBDII Code B1206 Lexus - Power Window Master Switch Communication Stop - AutoCodes.com — B1206 Lexus Code - Power Window Master Switch Communication Stop

What does this mean?

What are the Possible Causes of the DTC B1206 Lexus?

Faulty Power Window Master Switch
Power Window Master Switch harness is open or shorted
Power Window Master Switch circuit poor electrical connection

How to Fix the DTC B1206 Lexus?

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 B1206 Lexus 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 B1206 Lexus Code

1. What are the common symptoms of OBDII code B1206 in a Lexus related to the Power Window Master Switch Communication Stop?

- The common symptoms include non-functioning power windows, inability to control other power window switches, and possible issues with other electronic controls in the vehicle.

2. What are the possible causes of OBDII code B1206 in a Lexus related to the Power Window Master Switch Communication Stop?

- The code B1206 can be caused by damaged wiring, a faulty power window master switch, a defective power window control module, or a communication error within the vehicle's network.

3. How can I diagnose the OBDII code B1206 in a Lexus related to the Power Window Master Switch Communication Stop?

- Diagnosing the code involves checking the wiring for any visible damage, testing the power window master switch for proper functionality, inspecting the power window control module, and using a diagnostic scanner to identify communication errors.

4. Can I repair OBDII code B1206 in a Lexus related to the Power Window Master Switch Communication Stop myself?

- Depending on the cause of the code, repairs can range from simple fixes like repairing damaged wiring to more complex tasks like replacing the power window master switch or control module. It is recommended to have the necessary tools and knowledge before attempting any repairs.

5. Is it safe to continue driving my Lexus with OBDII code B1206 related to the Power Window Master Switch Communication Stop?

- While the vehicle may still be operational, it is not recommended to continue driving with unresolved communication issues related to critical components like power windows. Get the issue diagnosed and repaired as soon as possible to avoid further complications.

6. Will resetting the OBDII code B1206 in a Lexus related to the Power Window Master Switch Communication Stop fix the problem?

- Resetting the code may temporarily clear the error from the system, but it will not fix the underlying issue causing the communication stop. It is important to diagnose and address the root cause of the problem for a lasting solution.

7. How much does it typically cost to repair OBDII code B1206 in a Lexus related to the Power Window Master Switch Communication Stop?

- The cost of repair can vary depending on the specific cause of the code and the parts/labour involved. Simple fixes like repairing wiring may be relatively inexpensive, while replacing components like the power window master switch or control module can be more costly.

8. Are there any preventive measures to avoid OBDII code B1206 in a Lexus related to the Power Window Master Switch Communication Stop?

- To prevent issues like code B1206, it is recommended to regularly inspect the wiring harnesses for damage, avoid overloading the power window system, and address any power window issues promptly to prevent further damage to related components.

9. Can extreme weather conditions contribute to OBDII code B1206 in a Lexus related to the Power Window Master Switch Communication Stop?

- Extreme temperature fluctuations or exposure to moisture can potentially damage the wiring or electronic components related to the power window system, leading to communication errors like code B1206. It is important to keep the vehicle protected and maintained in such conditions.

10. How long does it typically take to repair OBDII code B1206 in a Lexus related to the Power Window Master Switch Communication Stop?

- The repair time can vary depending on the complexity of the issue and the availability of parts. Simple repairs may be completed within a few hours, while more involved tasks like module replacements could take longer. It is advisable to consult a professional for an accurate estimate.