B1273 Toyota 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 Toyota 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.
Code B1273 Toyota Description
What are the Possible Causes of the DTC B1273 Toyota?
- 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 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 B1273 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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Information for Specific Toyota Models
- B1273 2013 Toyota RAV4 — Sliding Roof ECU Communication Stop
- B1273 2014 Toyota RAV4 — Sliding Roof ECU Communication Stop
- B1273 2015 Toyota RAV4 — Sliding Roof ECU Communication Stop
- B1273 2016 Toyota RAV4 — Sliding Roof ECU Communication Stop
- B1273 2017 Toyota RAV4 — Sliding Roof ECU Communication Stop
- B1273 2018 Toyota RAV4 — Sliding Roof ECU Communication Stop
Frequently Asked Questions about B1273 Toyota Code
1. What are the common symptoms of OBDII code B1273 in a Toyota related to the Sliding Roof ECU Communication Stop?
The common symptoms include the sliding roof not responding to control inputs, failure to open or close, and a warning light on the dashboard.
2. What could be the possible causes of OBDII code B1273 in a Toyota related to the Sliding Roof ECU Communication Stop?
Possible causes may include a faulty sliding roof ECU, damaged wiring or connectors, a blown fuse, or a communication network issue.
3. How can I diagnose the OBDII code B1273 in a Toyota related to the Sliding Roof ECU Communication Stop?
Diagnosis involves checking the sliding roof ECU for proper function, inspecting wiring and connectors for damage, testing fuses, and scanning the communication network for faults.
4. Can I repair OBDII code B1273 in a Toyota related to the Sliding Roof ECU Communication Stop myself?
Depending on your automotive knowledge and skills, you may be able to repair this issue by replacing a faulty ECU, repairing damaged wiring, or addressing a communication network problem. However, professional assistance is recommended for complex repairs.
5. Is it safe to continue driving my Toyota with OBDII code B1273 related to the Sliding Roof ECU Communication Stop?
It is generally safe to drive the vehicle with this code, but the sliding roof may not function properly. It is advisable to address the issue promptly to avoid further inconvenience.
6. How much does it typically cost to repair OBDII code B1273 in a Toyota related to the Sliding Roof ECU Communication Stop?
The cost of repair can vary depending on the exact cause of the issue. It may range from a simple fix like replacing a fuse to a more complex repair involving the ECU or wiring, which can be more expensive.
7. Can extreme weather conditions affect OBDII code B1273 in a Toyota related to the Sliding Roof ECU Communication Stop?
Extreme weather conditions, especially moisture and temperature fluctuations, can exacerbate electrical issues and potentially contribute to the malfunction of the sliding roof ECU communication.
8. Are there any preventative maintenance tips to avoid encountering OBDII code B1273 related to the Sliding Roof ECU Communication Stop in my Toyota?
Regularly checking and maintaining the sliding roof system, ensuring proper electrical connections, and addressing any issues promptly can help prevent encountering this OBDII code.
9. Will resetting the OBDII system clear the B1273 code related to the Sliding Roof ECU Communication Stop in my Toyota?
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 repair the root cause of the problem.
10. Can a malfunctioning sunroof motor cause OBDII code B1273 related to the Sliding Roof ECU Communication Stop in a Toyota?
A malfunctioning sunroof motor may not directly cause OBDII code B1273. However, if the motor is not working correctly, it can affect the communication between the sliding roof ECU and other components, potentially leading to this error code.
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