AutoCodes – Generic – B2730

B2730 Code - Back Over-Temp Detected

Quick Answer

The Seat Control Module E (SCME) monitors seat backrest temperature while it supplies voltage and ground to both blower motors. Common causes include Restricted Driver Seat Backrest Blower Motor Filter, Faulty Driver Seat Backrest Blower Motor, Driver Seat Backrest Blower Motor harness is open or shorted. 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: B2730 indicates Back Over-Temp Detected.
Common causes: Common causes include Restricted Driver Seat Backrest Blower Motor Filter, Faulty Driver Seat Backrest Blower Motor, Driver Seat Backrest Blower Motor harness is open or shorted.
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 1,831

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 Jan 26, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2730 Description

The Seat Control Module E (SCME) monitors seat backrest temperature while it supplies voltage and ground to both blower motors. The SCME also supplies a variable voltage signal to control the blower speed. Cabin air enters the blower through a filter integrated to the blower motor housing. Heated or cooled air exits the blower motor and flows through the foam pad.
If the driver seat backrest blower motor temperature exceeds 70 Â° C (158 Â° F) in cool mode or 85 Â° C (185 Â° F) in heat mode for more than 4 seconds the SCME shuts down the driver seat system and sets this Diagnostic Trouble Code (DTC).

OBDII Code B2730 - Back Over-Temp Detected - AutoCodes.com — B2730 Code - Back Over-Temp Detected

What does this mean?

What are the Possible Causes of the DTC B2730?

Restricted Driver Seat Backrest Blower Motor Filter
Faulty Driver Seat Backrest Blower Motor
Driver Seat Backrest Blower Motor harness is open or shorted
Driver Seat Backrest Blower Motor circuit poor electrical connection
Faulty Seat Control Module E (SCME)

How to Fix the DTC B2730?

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 B2730 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 B2730 code?

Need more information on how to fix the B2730 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2730 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2730 Ford — Back Over-Temp Detected
B2730 Lincoln — Back Over-Temp Detected
B2730 Mercury — Back Over-Temp Detected

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 B2730 Code

1. What does OBDII code B2730 mean?

Code B2730 indicates that the vehicle's system has detected an over-temperature condition in the rear or back area, often related to components like a heated seat or rear temperature sensor.

2. What are the common symptoms of code B2730?

Symptoms may include non-functional heated seats, erratic temperature readings, warning lights on the dashboard, or unusual heat from the affected area.

3. What causes the B2730 code to be triggered?

Common causes include a faulty rear temperature sensor, damaged wiring, a malfunctioning heated seat module, or excessive electrical resistance in the circuit.

4. Can I drive my car with a B2730 code?

Yes, in most cases, you can drive with this code active, but heated seat functions or rear temperature controls may not work as intended.

5. How do I diagnose the B2730 code?

Start by checking the rear temperature sensor and related wiring for visible damage. Use a scan tool to monitor sensor data and determine if readings are erratic or out of range.

6. What parts might need replacement for a B2730 code?

Potential parts to replace include the rear temperature sensor, heated seat module, or damaged wiring associated with the affected circuit.

7. How much does it cost to repair a B2730 code?

Repair costs vary, but replacing a rear temperature sensor or wiring repair typically ranges from $100 to $300, depending on labor and parts.

8. Can a B2730 code clear itself?

The code may clear itself if the underlying issue, such as overheating, resolves temporarily, but the root cause should still be addressed to prevent recurrence.

9. How can I prevent a B2730 code from occurring?

Regularly inspect and maintain the wiring and connectors for the rear temperature system and avoid overloading circuits that power heated seats.

10. Is a professional mechanic needed to fix the B2730 code?

While some basic checks can be done by DIYers, diagnosing and repairing electrical issues often requires specialized tools and expertise, so consulting a professional is recommended.