AutoCodes – Toyota – B1273 2017 Toyota RAV4

B1273 2017 Toyota RAV4 Code - Sliding Roof ECU Communication Stop

Quick Answer

This Diagnostic Trouble Code (DTC) is stored when Local Interconnect Network (LIN) communication between the sliding roof drive gear sub-assembly and Main Body ECU (Multiplex Network Body ECU) stops for 10 seconds or more. Common causes include Faulty Sliding roof drive gear sub-assembly, Faulty Main Body ECU (Multiplex Network Body ECU), Main Body ECU harness is open or shorted. 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: B1273 2017 Toyota RAV4 indicates Sliding Roof ECU Communication Stop.
Common causes: Common causes include Faulty Sliding roof drive gear sub-assembly, Faulty Main Body ECU (Multiplex Network Body ECU), Main Body ECU harness is open or shorted.
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 509

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 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 B1273 2017 Toyota RAV4 Description

OBDII Code B1273 2017 Toyota RAV4 - Sliding Roof ECU Communication Stop - AutoCodes.com — B1273 2017 Toyota RAV4 Code - Sliding Roof ECU Communication Stop

What does this mean?

What are the Possible Causes of the DTC B1273 2017 Toyota RAV4?

Faulty Sliding roof drive gear sub-assembly
Faulty Main Body ECU (Multiplex Network Body ECU)
Main Body ECU harness is open or shorted
Main Body ECU circuit poor electrical connection

How to Fix the DTC B1273 2017 Toyota RAV4?

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 B1273 2017 Toyota RAV4 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 B1273 2017 Toyota RAV4 code?

Need more information on how to fix the B1273 2017 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1273 2017 Toyota RAV4 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 B1273 2017 Toyota RAV4 Code

1. What are the common symptoms of OBDII code B1273 in a 2017 Toyota RAV4?

The common symptoms of code B1273 include a malfunctioning sliding roof, inability to open or close the sunroof, and a warning light on the dashboard.

2. What does the OBDII code B1273 indicating "Sliding Roof ECU Communication Stop" mean for a 2017 Toyota RAV4?

Code B1273 indicates a communication failure between the sliding roof ECU (Electronic Control Unit) and other related modules in the vehicle.

3. What are some possible causes of OBDII code B1273 in a 2017 Toyota RAV4?

Possible causes of code B1273 include damaged wiring harnesses, loose connections, a faulty sliding roof ECU, or issues with other control modules in the vehicle.

4. How can I diagnose OBDII code B1273 in my 2017 Toyota RAV4?

Diagnosing code B1273 involves checking the wiring harness for damage, verifying the connections to the sliding roof ECU, and performing a thorough inspection of the related control modules.

5. Can I repair OBDII code B1273 in my 2017 Toyota RAV4 myself?

While some DIY enthusiasts may attempt to repair code B1273 by checking connections and wiring, it is recommended to consult a professional mechanic for accurate diagnosis and repair.

6. Is it safe to drive my 2017 Toyota RAV4 with OBDII code B1273 present?

It is generally safe to drive with code B1273, but it is advisable to address the issue promptly to avoid potential malfunctions in the sliding roof system.

7. How much does it cost to repair OBDII code B1273 in a 2017 Toyota RAV4?

The cost of repairing code B1273 can vary depending on the underlying cause, parts needed for replacement, and labor charges. It is best to obtain a detailed quote from a trusted mechanic.

8. Can resetting the OBDII system clear code B1273 in a 2017 Toyota RAV4?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear. It is essential to diagnose and fix the root cause of the problem.

9. Will disconnecting the battery reset OBDII code B1273 in my 2017 Toyota RAV4?

Disconnecting the battery may reset the code temporarily, but it is not a permanent solution. Proper diagnosis and repair are necessary to prevent the code from returning.

10. How long does it take to repair OBDII code B1273 in a 2017 Toyota RAV4?

The repair time for code B1273 can vary based on the specific cause of the issue and the complexity of the repair. It is recommended to consult with a mechanic for an accurate estimate of the repair duration.