B297B 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
- B297B 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.
Code B297B Buick Description
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.
What are the Possible Causes of the DTC B297B 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 B297B 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 B297B 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.
Need more information about the B297B Buick code?
Need more information on how to fix the B297B Buick code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B297B Buick code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B297B Buick Code
What does the OBDII code B297B mean on a Buick?
The code B297B indicates a problem with the driver door open switch circuit, specifically that the signal is not plausible or consistent with expected readings.
What are the common symptoms of the B297B code?
Symptoms may include the driver door not registering as open or closed, malfunctioning interior lights, or issues with features like door locking and alarm systems.
What causes the B297B code to appear?
Common causes include a faulty driver door switch, damaged wiring or connectors, corrosion in the circuit, or a malfunctioning Body Control Module (BCM).
Can the B297B code affect other systems in the vehicle?
Yes, it may impact systems like the alarm, power locks, and interior lighting that rely on accurate door status signals.
How can I diagnose the B297B code on a Buick?
Start by inspecting the driver door switch and wiring for damage or corrosion, then use a multimeter to test circuit continuity and verify proper signal outputs.
Is the driver door switch the only part that could cause the B297B code?
No, the issue could also stem from damaged wiring, corroded connectors, or a fault in the BCM.
Can I reset the B297B code without fixing the problem?
You may be able to clear the code temporarily using an OBDII scanner, but it will likely return unless the underlying issue is resolved.
How much does it cost to repair the B297B code?
Repair costs depend on the cause, ranging from $50-$150 for a door switch replacement to $300 or more for BCM repairs or extensive wiring work.
Can I drive my Buick with the B297B code?
Yes, but features like the alarm system and power locks may not work properly, and it’s best to address the issue promptly to avoid further complications.
Does the B297B code require professional repair?
If you’re experienced with electrical diagnostics, you may be able to fix it yourself, but a certified technician can ensure the problem is accurately diagnosed and repaired.
Discuss the causes and fixes for B297B Buick OBDII Code
Code B297B Buick comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
