AutoCodes – Generic – B1984

B1984 Code - Seat Switch Lumbar Inflate Circuit Failure

Quick Answer

The Body Control Module (BCM) monitors the Seat Switch Lumbar Inflate. Common causes include Faulty Seat Switch Lumbar Inflate, Seat Switch Lumbar Inflate harness is open or shorted, Seat Switch Lumbar Inflate 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: B1984 indicates Seat Switch Lumbar Inflate Circuit Failure.
Common causes: Common causes include Faulty Seat Switch Lumbar Inflate, Seat Switch Lumbar Inflate harness is open or shorted, Seat Switch Lumbar Inflate 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 3,702

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 Aug 02, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1984 Description

The Body Control Module (BCM) monitors the Seat Switch Lumbar Inflate. The BCM sets the OBDII code when the Seat Switch Lumbar Inflate is not to factory specifications.

OBDII Code B1984 - Seat Switch Lumbar Inflate Circuit Failure - AutoCodes.com — B1984 Code - Seat Switch Lumbar Inflate Circuit Failure

What does this mean?

What are the Possible Causes of the DTC B1984?

Faulty Seat Switch Lumbar Inflate
Seat Switch Lumbar Inflate harness is open or shorted
Seat Switch Lumbar Inflate circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1984?

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 B1984 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 B1984 code?

Need more information on how to fix the B1984 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1984 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1984 Chrysler — Power Liftgate Latch Control 2 Circuit Low
B1984 Dodge — Power Liftgate Latch Control 2 Circuit Low
B1984 Jeep — Power Liftgate Latch Control 2 Circuit Low
B1984 RAM — Power Liftgate Latch Control 2 Circuit Low

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 B1984 Code

1. What are common symptoms of OBDII code B1984 Seat Switch Lumbar Inflate Circuit Failure?

Common symptoms include the inability to adjust the lumbar support in the seat, a non-functional lumbar support system, or a warning light on the dashboard.

2. What are the possible causes of OBDII code B1984 Seat Switch Lumbar Inflate Circuit Failure?

Possible causes include a faulty seat switch, damaged wiring or connectors in the lumbar inflation circuit, a blown fuse, or a malfunctioning lumbar inflation pump.

3. How can I diagnose OBDII code B1984 Seat Switch Lumbar Inflate Circuit Failure?

Diagnosing this code typically involves using a diagnostic scanner to retrieve the code, inspecting the seat switch and lumbar inflation components for visible damage, and testing the wiring and connectors for continuity.

4. Can I still drive my vehicle with OBDII code B1984 Seat Switch Lumbar Inflate Circuit Failure?

While the vehicle should still be safe to drive, it is recommended to address the issue promptly to ensure the proper functioning of the lumbar support system and avoid any further damage.

5. How can I repair OBDII code B1984 Seat Switch Lumbar Inflate Circuit Failure?

Repair options may include replacing the faulty seat switch, repairing or replacing damaged wiring or connectors, checking and replacing blown fuses, or repairing or replacing the lumbar inflation pump.

6. Is it possible to reset OBDII code B1984 Seat Switch Lumbar Inflate Circuit Failure without repairs?

Resetting the code without addressing the underlying issue may temporarily turn off the warning light, but the problem will likely reoccur until the root cause is fixed.

7. Can a DIY enthusiast fix OBDII code B1984 Seat Switch Lumbar Inflate Circuit Failure at home?

Depending on the level of expertise, a DIY enthusiast may be able to diagnose and repair this issue at home, especially if they have experience working with automotive electrical systems.

8. Will fixing OBDII code B1984 Seat Switch Lumbar Inflate Circuit Failure be expensive?

The cost of fixing this code can vary depending on the exact cause of the issue and whether professional repairs are needed. In some cases, simple fixes like replacing a fuse may be relatively inexpensive.

9. Is OBDII code B1984 Seat Switch Lumbar Inflate Circuit Failure common in certain vehicle makes or models?

This code can occur in various vehicle makes and models that are equipped with lumbar support systems, so it's not specific to any particular brand.

10. Can OBDII code B1984 Seat Switch Lumbar Inflate Circuit Failure cause any other problems in the vehicle?

While this code specifically relates to the lumbar support system, unresolved issues with the seat switch or wiring could potentially lead to other electrical problems in the vehicle over time.