AutoCodes – Generic – B1844

B1844 Code - Phone Handset Circuit Failure

Quick Answer

The Body Control Module (BCM) monitors the Phone Handset. Common causes include Faulty Phone Handset, Phone Handset harness is open or shorted, Phone Handset 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: B1844 indicates Phone Handset Circuit Failure.
Common causes: Common causes include Faulty Phone Handset, Phone Handset harness is open or shorted, Phone Handset 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 3,906

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 Jul 02, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1844 Description

The Body Control Module (BCM) monitors the Phone Handset. The BCM sets the OBDII code when the Phone Handset is not to factory specifications.

OBDII Code B1844 - Phone Handset Circuit Failure - AutoCodes.com — B1844 Code - Phone Handset Circuit Failure

What does this mean?

What are the Possible Causes of the DTC B1844?

Faulty Phone Handset
Phone Handset harness is open or shorted
Phone Handset circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1844?

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 B1844 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 B1844 code?

Need more information on how to fix the B1844 code? Get Access to Factory Service Manuals

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Get the B1844 code diagnosed by a professional: Find a repair shop in your area

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 B1844 Code

1. What are the common symptoms of OBDII code B1844 (Phone Handset Circuit Failure)?

- Common symptoms include a malfunctioning phone handset, loss of communication with the phone system, and error messages on the vehicle's display.

2. What are the possible causes of OBDII code B1844?

- Causes of this code may include a faulty phone handset, damaged wiring or connectors in the phone circuit, or issues with the phone module itself.

3. How can I diagnose the Phone Handset Circuit Failure related to code B1844?

- To diagnose this issue, you can start by checking the phone handset for any visible damage, inspecting the wiring and connectors for wear or corrosion, and using a diagnostic scanner to read the specific error codes.

4. Can I repair OBDII code B1844 on my own?

- Depending on the underlying cause, you may be able to repair this code on your own by replacing a faulty phone handset, repairing damaged wiring, or addressing issues with the phone module. However, professional help may be needed for complex repairs.

5. Are there any temporary fixes for OBDII code B1844?

- In some cases, resetting the vehicle's electronics by disconnecting and reconnecting the battery can temporarily clear the code. However, this is not a permanent solution, and the underlying issue should still be addressed.

6. How do I prevent OBDII code B1844 from recurring?

- To prevent this code from recurring, it's important to regularly inspect the phone circuit components for damage, avoid using incompatible phone handsets, and follow the manufacturer's guidelines for maintaining the phone system.

7. Can OBDII code B1844 cause any other problems in my vehicle?

- While this code specifically relates to a phone handset circuit failure, unresolved issues with the phone system can potentially affect other vehicle systems that rely on communication signals, so it's important to address the problem promptly.

8. Is it safe to continue driving with OBDII code B1844 present?

- It is generally safe to continue driving with this code, but you may experience issues with the phone system functionality. If the code is accompanied by other concerning symptoms, it's advisable to have the vehicle inspected by a professional.

9. How much does it typically cost to repair OBDII code B1844?

- The cost of repairing this code can vary depending on the specific cause of the issue, the extent of the damage, and whether professional labor is required. It's recommended to obtain quotes from automotive service providers for an accurate estimate.

10. Will resetting the OBDII system clear code B1844 permanently?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not resolved, the code is likely to reappear. It's important to diagnose and address the root cause of the problem for a permanent fix.