Engine-CodesChevrolet – B1820 Chevrolet

B1820 Chevrolet Code - Driver Seat Recline Rearward Switch Circuit

Quick Answer

The B1820 Chevrolet code indicates a problem with the driver seat recline rearward switch circuit in the vehicle. Common causes include Wiring issues such as shorts or open circuits, A faulty recline rearward switch, Malfunctioning seat control module. 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
B1820 Chevrolet indicates Driver Seat Recline Rearward Switch Circuit.
Common causes
Common causes include Wiring issues such as shorts or open circuits, A faulty recline rearward switch, Malfunctioning seat control module.
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.
Table of contents Created and updated by William Orellana on Sep 14, 2024
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Code B1820 Chevrolet Description

The B1820 Chevrolet code indicates a problem with the driver seat recline rearward switch circuit in the vehicle. This circuit is responsible for controlling the movement of the driver's seat to recline rearward. When this code is triggered, it means that the vehicle's onboard computer has detected an issue with the electrical circuit that controls this specific function.

OBDII Code B1820 Chevrolet - Driver Seat Recline Rearward Switch Circuit
B1820 Chevrolet Code - Driver Seat Recline Rearward Switch Circuit

Common Causes of B1820 Chevrolet

  1. Wiring issues such as shorts or open circuits.
  2. A faulty recline rearward switch.
  3. Malfunctioning seat control module.
  4. Problem with the seat motor.
  5. Corrosion or damage to electrical connectors.

Symptoms of B1820 Chevrolet

  1. Inability to adjust the driver's seat to recline rearward.
  2. Unresponsive or erratic movement of the driver's seat.
  3. Illumination of the seat adjustment warning light on the dashboard.
  4. Strange noises coming from the seat when attempting to adjust it.
  5. The seat getting stuck in a certain position.

How to Fix B1820 Chevrolet

  1. Begin by conducting a visual inspection of the wiring and connectors associated with the driver seat recline rearward switch circuit.
  2. Test the switch for proper functionality using a multimeter to determine if it is sending the correct signals.
  3. Check the seat control module for any signs of damage or malfunction and replace if necessary.
  4. Inspect the seat motor for any issues and replace it if it is found to be faulty.
  5. Clear the diagnostic trouble codes from the vehicle's computer using a scan tool after completing the repair.

Cost to Fix B1820 Chevrolet

The typical repair costs for addressing the B1820 Chevrolet code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the cost of parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. It is important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the extent of the repair needed. It is advisable to contact local auto repair shops for a more accurate cost estimate.

Tech Notes for B1820 Chevrolet









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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 B1820 Chevrolet Code

1. What are the common symptoms of OBDII code B1820 in a Chevrolet related to the Driver Seat Recline Rearward Switch Circuit?

The common symptoms include the driver seat recline rearward switch not functioning, the seat recline function not working properly, or an illuminated warning light on the dashboard.

2. What are the typical causes of OBDII code B1820 in a Chevrolet?

The code B1820 is usually triggered by a faulty driver seat recline rearward switch, damaged wiring or connectors in the circuit, or a malfunction in the seat control module.

3. How can I diagnose the issue related to OBDII code B1820 in my Chevrolet?

You can diagnose the problem by visually inspecting the wiring and connectors related to the driver seat recline rearward switch, testing the switch for continuity, and using a scan tool to retrieve the specific error codes.

4. Can I repair the OBDII code B1820 issue in my Chevrolet at home?

Depending on your level of expertise, you may be able to repair the issue at home by replacing the faulty driver seat recline rearward switch, repairing any damaged wiring or connectors, or resetting the seat control module.

5. Is it safe to drive my Chevrolet with OBDII code B1820 present?

It is generally not recommended to drive your vehicle with unresolved OBDII codes, as they can indicate underlying issues that may affect the safety and performance of your vehicle.

6. Will resetting the OBDII code B1820 in my Chevrolet make the problem go away?

Resetting the code may temporarily turn off the warning light, but if the root cause of the issue is not addressed and repaired, the code is likely to reappear.

7. How much does it typically cost to repair OBDII code B1820 in a Chevrolet?

The cost of repairing the B1820 code can vary depending on the specific cause of the issue, but it may involve expenses for parts replacement, labor costs, and diagnostic fees.

8. Can a faulty driver seat recline rearward switch cause other electrical problems in my Chevrolet?

Yes, a faulty switch in the driver seat recline circuit can potentially cause other electrical issues in the vehicle, especially if it affects the functionality of the seat control module or related components.

9. Are there any recalls or technical service bulletins related to OBDII code B1820 in Chevrolet vehicles?

It's recommended to check with your local Chevrolet dealership or visit the manufacturer's website to see if there are any relevant recalls or technical service bulletins addressing the B1820 code for your specific vehicle model.

10. How can I prevent OBDII code B1820 from occurring in my Chevrolet in the future?

Regularly inspecting and maintaining the driver seat recline rearward switch, wiring, and connectors can help prevent issues that may trigger the B1820 trouble code.

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