AutoCodes – Buick – B297C Buick

B297C Buick Code - Driver Door Open Switch Circuit Not Plausible

Quick Answer

The keyless entry control module provides a 12V signal to the driver door open switch signal circuit. Common causes include Faulty Door Latch Assembly-Driver, Door Latch Assembly-Driver harness is open or shorted, Door Latch Assembly-Driver 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: B297C Buick indicates Driver Door Open Switch Circuit Not Plausible.
Common causes: Common causes include Faulty Door Latch Assembly-Driver, Door Latch Assembly-Driver harness is open or shorted, Door Latch Assembly-Driver 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 462

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 Feb 24, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code B297C Buick Description

The keyless entry control module provides a 12V signal to the driver door open switch signal circuit. The driver window motor provides a 12V signal to the driver door ajar switch signal circuit. The door open switches and the door ajar switches are integral to the driver door latch assembly.
The door open switch and the door ajar switch contacts will be open with the door is fully closed, the door switches within the door latch are designed so that the when the door is ajar, the contact in the door ajar switch closes, the voltage is pulled low and the window motor will then send a serial data message to the Body Control Module (BCM) indicating that the door is ajar. When the door is opened further, the contact in the door open switch will then close providing a ground for the door open signal circuit, the keyless entry control module will then detect that the door is open.

OBDII Code B297C Buick - Driver Door Open Switch Circuit Not Plausible - AutoCodes.com — B297C Buick Code - Driver Door Open Switch Circuit Not Plausible

What does this mean?

What are the Possible Causes of the DTC B297C Buick?

Faulty Door Latch Assembly-Driver
Door Latch Assembly-Driver harness is open or shorted
Door Latch Assembly-Driver circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B297C Buick?

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 B297C Buick 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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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.