AutoCodes – Toyota – B1247 2018 Toyota RAV4

B1247 2018 Toyota RAV4 Code - Tire Pressure Monitor Receiver Communication Stop

Quick Answer

The main body ECU (multiplex network body ECU) and tire pressure warning ECU and receiver are connected using 2 direct lines that they use to communicate with each other. Common causes include Faulty Tire Pressure Warning ECU, Tire Pressure Warning ECU harness is open or shorted, Tire Pressure Warning ECU circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
B1247 2018 Toyota RAV4 indicates Tire Pressure Monitor Receiver Communication Stop.
Common causes
Common causes include Faulty Tire Pressure Warning ECU, Tire Pressure Warning ECU harness is open or shorted, Tire Pressure Warning ECU circuit poor electrical connection.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
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Code Popularity 1,314
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Nov 19, 2024
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Code B1247 2018 Toyota RAV4 Description

The main body ECU (multiplex network body ECU) and tire pressure warning ECU and receiver are connected using 2 direct lines that they use to communicate with each other. The Diagnostic Trouble Code (DTC) will be set if in diagnostic mode, an applicable RDA signal cannot be received within 10 seconds after a PRG signal is sent from the main body ECU (multiplex network body ECU).
OBDII Code B1247 2018 Toyota RAV4 - Tire Pressure Monitor Receiver Communication Stop - AutoCodes.com
B1247 2018 Toyota RAV4 Code - Tire Pressure Monitor Receiver Communication Stop

What are the Possible Causes of the DTC B1247 2018 Toyota RAV4?

  • Faulty Tire Pressure Warning ECU
  • Tire Pressure Warning ECU harness is open or shorted
  • Tire Pressure Warning ECU circuit poor electrical connection
  • Faulty Main Body ECU (Multiplex Network Body ECU)

How to Fix the DTC B1247 2018 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 B1247 2018 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 B1247 2018 Toyota RAV4 code?

Need more information on how to fix the B1247 2018 Toyota RAV4 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1247 2018 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 B1247 2018 Toyota RAV4 Code

1. What are the common symptoms of OBDII code B1247 on a 2018 Toyota RAV4?

The common symptoms of code B1247 include the Tire Pressure Monitoring System (TPMS) warning light illuminating on the dashboard and a loss of communication with the TPMS receiver.

2. What can cause the OBDII code B1247 on a 2018 Toyota RAV4?

The code B1247 is typically triggered by a communication error between the Tire Pressure Monitor Receiver and the vehicle's onboard diagnostic system. This could be due to wiring issues, a faulty TPMS receiver, or a problem with the control module.

3. How can I diagnose the OBDII code B1247 on my 2018 Toyota RAV4?

Diagnosing code B1247 involves inspecting the TPMS receiver, checking the wiring harness for any damage or loose connections, and using a diagnostic scanner to communicate with the TPMS system for further troubleshooting.

4. Is it safe to drive with the OBDII code B1247 on a 2018 Toyota RAV4?

While it is generally safe to drive with the B1247 code related to the TPMS receiver communication, it is important to address the issue promptly to ensure the proper functioning of the tire pressure monitoring system.

5. Can I reset the OBDII code B1247 on my 2018 Toyota RAV4 without repairs?

Resetting the B1247 code without addressing the underlying issue may temporarily turn off the warning light, but the problem will likely persist. It is recommended to diagnose and repair the root cause of the code to prevent it from reoccurring.

6. How much does it cost to repair the OBDII code B1247 on a 2018 Toyota RAV4?

The cost of repairing code B1247 can vary depending on the exact cause of the issue. It may involve replacing the TPMS receiver, repairing wiring, or addressing a control module problem. Costs can range from a few hundred to over a thousand dollars.

7. Are there any DIY tips for fixing the OBDII code B1247 on a 2018 Toyota RAV4?

While diagnosing and repairing code B1247 may require specialized tools and expertise, you can start by checking the TPMS receiver connections and fuses for any visible issues. However, for a proper fix, it is recommended to consult a professional mechanic.

8. How long does it take to repair the OBDII code B1247 on a 2018 Toyota RAV4?

The repair time for code B1247 can vary based on the complexity of the issue. Simple fixes like reconnecting loose wires may take a short time, while more involved repairs such as replacing the TPMS receiver could require several hours.

9. Can extreme weather conditions trigger the OBDII code B1247 on a 2018 Toyota RAV4?

Extreme weather conditions can potentially affect the TPMS receiver communication, leading to the triggering of code B1247. It is essential to ensure that the TPMS system is properly maintained to prevent weather-related issues.

10. Will the OBDII code B1247 on a 2018 Toyota RAV4 affect the vehicle's performance?

Code B1247 related to the Tire Pressure Monitor Receiver communication stop is unlikely to directly impact the vehicle's performance. However, it is crucial to resolve the issue promptly to maintain the proper functioning of the TPMS system and ensure optimal safety on the road.

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