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Engine-Codes – Generic – B1731

B1731 Code - Seat Driver Rear Down Switch Circuit Short To Battery

Quick Answer

The B1731 diagnostic trouble code indicates that there is a short to the battery in the circuit for the driver rear down switch of the seat. Common causes include Short circuit in the wiring of the driver rear down switch, Faulty driver rear down switch, Corrosion or damage to the wiring harness. 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
B1731 indicates Seat Driver Rear Down Switch Circuit Short To Battery.
Common causes
Common causes include Short circuit in the wiring of the driver rear down switch, Faulty driver rear down switch, Corrosion or damage to the wiring harness.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code B1731 Description

The B1731 diagnostic trouble code indicates that there is a short to the battery in the circuit for the driver rear down switch of the seat. This means that there is an abnormal connection that is allowing current to flow directly to the battery, bypassing the normal circuitry. This can potentially lead to issues with the driver rear down switch not functioning properly, causing the seat to be stuck in one position or unable to adjust as needed.

OBDII Code B1731 - Seat Driver Rear Down Switch Circuit Short To Battery
B1731 Code - Seat Driver Rear Down Switch Circuit Short To Battery

Common Causes of B1731

  1. Short circuit in the wiring of the driver rear down switch.
  2. Faulty driver rear down switch.
  3. Corrosion or damage to the wiring harness.
  4. Electrical issues in the vehicle's system.
  5. Loose connections in the circuit.

Symptoms of B1731

  1. Inability to adjust the driver rear seat position.
  2. Seat getting stuck in a certain position.
  3. Seat moving on its own without input.
  4. Electrical burning smell in the vehicle.
  5. Malfunctioning seat controls.

How to Fix B1731

  1. Begin by diagnosing the specific location of the short to the battery in the circuit using a multimeter.
  2. Inspect the wiring harness for any signs of damage, corrosion, or loose connections.
  3. Replace the driver rear down switch if it is found to be faulty.
  4. Repair or replace any damaged wiring in the circuit.
  5. Clear the trouble code from the vehicle's computer system and test the seat adjustment system to ensure it is functioning properly.

Cost to Fix B1731

The typical repair costs for addressing a B1731 code can vary depending on the extent of the issue and the specific parts that need to be replaced. On average, the cost can range from $100 to $300 for parts and labor. It is important to keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it is recommended to check with local shops for a more accurate estimate.

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Code B1731 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 B1731 Code

1. What does OBDII code B1731 mean?

B1731 indicates a short to battery in the driver seat rear down switch circuit, which controls the seat adjustment mechanism.

2. What are common symptoms of code B1731?

Symptoms include the driver’s seat not moving down as intended, limited seat adjustment, or unresponsive seat controls.

3. What causes the B1731 code to appear?

Common causes include damaged wiring, a faulty seat adjustment switch, or a short circuit in the seat motor or related wiring.

4. How can I diagnose the B1731 code?

Inspect the seat adjustment switch, check for damaged or frayed wiring, and test the circuit for continuity or short circuits using a multimeter.

5. Can I still drive my car with code B1731?

Yes, the code does not affect drivability, but it may compromise your seating comfort and safety if adjustments are needed.

6. How do I fix the B1731 code?

Repairs may include replacing or repairing damaged wiring, replacing the seat adjustment switch, or repairing the seat motor if necessary.

7. How much does it cost to fix the B1731 code?

The cost depends on the specific issue, but repairs can range from $50 for wiring fixes to $200 or more for switch or motor replacement.

8. Can I fix the B1731 code myself?

If you’re comfortable working with electrical systems, you can attempt basic diagnostics and repairs like checking wires or replacing the switch. Otherwise, seek professional help.

9. Will resetting the code fix the problem?

Resetting the code may temporarily clear it, but the underlying issue must be repaired to prevent the code from returning.

10. Is the B1731 code common?

This code is relatively uncommon and specific to vehicles with power-adjustable seats, typically appearing after electrical faults or wear-and-tear.

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