AutoCodesGeneric – B1E28

B1E28 Code - 3rd Row Seat Normal/Stow Switch Circuit Low

Quick Answer

The Power Rear Folding Seat Module monitors the 3rd Row Seat Normal/Stow Switch. Common causes include Faulty Power Folding Seat Switch, Power Folding Seat Switch harness is open or shorted, Power Folding Seat Switch circuit poor electrical connection. 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
B1E28 indicates 3rd Row Seat Normal/Stow Switch Circuit Low.
Common causes
Common causes include Faulty Power Folding Seat Switch, Power Folding Seat Switch harness is open or shorted, Power Folding Seat Switch circuit poor electrical connection.
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 586
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 03, 2019
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Code B1E28 Description

The Power Rear Folding Seat Module monitors the 3rd Row Seat Normal/Stow Switch. The Power Rear Folding Seat Module sets the OBDII code when the Folding Seat Module detects the Normal/Stow Switch MUX circuit voltage is below 9 volts.
OBDII Code B1E28 - 3rd Row Seat Normal/Stow Switch Circuit Low - AutoCodes.com
B1E28 Code - 3rd Row Seat Normal/Stow Switch Circuit Low

What are the Possible Causes of the DTC B1E28?

  • Faulty Power Folding Seat Switch
  • Power Folding Seat Switch harness is open or shorted
  • Power Folding Seat Switch circuit poor electrical connection
  • Faulty Power Rear Folding Seat Module

How to Fix the DTC B1E28?

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 B1E28 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 Makes

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 B1E28 Code

1. What does the OBDII code B1E28 mean?

The B1E28 code indicates a low voltage issue in the 3rd Row Seat Normal/Stow switch circuit, which controls the stowing or upright position of the third-row seats.

2. What are the common symptoms of code B1E28?

Symptoms may include the third-row seat not moving between positions, a malfunctioning seat switch, or the seat being stuck in one position.

3. What causes the B1E28 code to appear?

Common causes include a faulty seat switch, damaged or corroded wiring, a blown fuse, or a poor electrical connection in the circuit.

4. How can I diagnose the B1E28 code?

Start by inspecting the seat switch, wiring, and connectors for visible damage or corrosion. Use a multimeter to test for proper voltage and continuity in the circuit.

5. Can the B1E28 code be caused by a dead battery?

While unlikely, a weak or dead battery could contribute to low voltage in the circuit and trigger the code.

6. How do I fix the B1E28 code?

Repairs may include replacing the faulty seat switch, repairing damaged wiring, cleaning corroded connectors, or replacing a blown fuse.

7. Is it safe to drive with the B1E28 code active?

Yes, it’s generally safe to drive, but the third-row seat functionality will be limited or disabled until the issue is resolved.

8. Can a software update fix the B1E28 code?

A software update is unlikely to fix this issue, as it typically involves a physical problem with the switch or circuit.

9. How much does it cost to repair the B1E28 code?

Repair costs can vary depending on the issue, but replacing a seat switch or repairing wiring may cost between $100 and $300, including labor.

10. What tools are needed to troubleshoot the B1E28 code?

Basic tools include a multimeter for electrical testing, a scan tool for reading and clearing codes, and possibly a wiring diagram for the seat circuit.

Discuss the causes and fixes for B1E28 OBDII Code

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