AutoCodes – Generic – B2243

B2243 Code - Driver Rear Door Ajar Circuit Open

Quick Answer

The Body Control Module (BCM) monitors the Driver Rear Door Ajar. Common causes include Faulty Driver Rear Door Ajar, Driver Rear Door Ajar harness is open or shorted, Driver Rear Door Ajar 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: B2243 indicates Driver Rear Door Ajar Circuit Open.
Common causes: Common causes include Faulty Driver Rear Door Ajar, Driver Rear Door Ajar harness is open or shorted, Driver Rear Door Ajar 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 5,484

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 Oct 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2243 Description

The Body Control Module (BCM) monitors the Driver Rear Door Ajar. The BCM sets the OBDII code when the Driver Rear Door Ajar is not to factory specifications.

OBDII Code B2243 - Driver Rear Door Ajar Circuit Open - AutoCodes.com — B2243 Code - Driver Rear Door Ajar Circuit Open

What does this mean?

What are the Possible Causes of the DTC B2243?

Faulty Driver Rear Door Ajar
Driver Rear Door Ajar harness is open or shorted
Driver Rear Door Ajar circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B2243?

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 B2243 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 B2243 code?

Need more information on how to fix the B2243 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2243 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B2243 Lexus — Current Steering Angle Mid-Point Unset
B2243 Toyota — Current Steering Angle Mid-Point Unset

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 B2243 Code

1. What are the common symptoms of OBDII code B2243 (Driver Rear Door Ajar Circuit Open)?

The common symptoms include the interior light staying on, the door ajar warning light on the dashboard being illuminated, and potential issues with power door locks.

2. What are the possible causes of OBDII code B2243?

The code B2243 may be triggered by a faulty door ajar switch, damaged wiring in the door jamb, a broken door latch mechanism, or a malfunctioning control module.

3. How can I diagnose the cause of OBDII code B2243?

You can diagnose the issue by visually inspecting the door ajar switch and wiring, testing the switch for continuity, checking the door latch mechanism for proper operation, and using a scan tool to read live data from the control module.

4. Can I drive my vehicle with OBDII code B2243 present?

While it may be safe to drive the vehicle with this code, it is recommended to address the issue promptly to avoid potential electrical problems or draining the battery due to the interior light staying on.

5. How can I repair OBDII code B2243?

To repair the code B2243, you may need to replace the faulty door ajar switch, repair damaged wiring, fix or replace the door latch mechanism, or reprogram the control module if necessary.

6. Are there any DIY tips for fixing OBDII code B2243?

DIY tips include checking and cleaning the door ajar switch contacts, securing any loose wiring connections, lubricating the door latch mechanism, and resetting the control module by disconnecting the battery for a few minutes.

7. Can weather conditions affect OBDII code B2243?

Yes, extreme weather conditions such as exposure to moisture or temperature fluctuations can sometimes cause issues with the door ajar circuit, leading to the code B2243 being triggered.

8. Will resetting the OBDII system clear code B2243?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing code B2243 is not addressed, the code is likely to reappear.

9. How much does it cost to repair OBDII code B2243 at a mechanic?

The cost of repairing OBDII code B2243 at a mechanic can vary depending on the specific cause of the issue, but it may range from $100 to $300, including parts and labor.

10. Can OBDII code B2243 affect other vehicle systems?

While OBDII code B2243 specifically relates to the driver rear door ajar circuit, unresolved issues with this code could potentially affect other electrical systems in the vehicle over time if left unattended.