AutoCodes – Mercury – B2250 Mercury

B2250 Mercury Code - All Doors Unlock Relay Circuit Failure

Quick Answer

The Body Control Module (BCM) monitors the All Doors Unlock Relay. Common causes include Faulty All Doors Unlock Relay, All Doors Unlock Relay harness is open or shorted, All Doors Unlock Relay 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: B2250 Mercury indicates All Doors Unlock Relay Circuit Failure.
Common causes: Common causes include Faulty All Doors Unlock Relay, All Doors Unlock Relay harness is open or shorted, All Doors Unlock Relay 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 535

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 B2250 Mercury Description

The Body Control Module (BCM) monitors the All Doors Unlock Relay. The BCM sets the OBDII code when the All Doors Unlock Relay is not to factory specifications.

OBDII Code B2250 Mercury - All Doors Unlock Relay Circuit Failure - AutoCodes.com — B2250 Mercury Code - All Doors Unlock Relay Circuit Failure

What does this mean?

What are the Possible Causes of the DTC B2250 Mercury?

Faulty All Doors Unlock Relay
All Doors Unlock Relay harness is open or shorted
All Doors Unlock Relay circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B2250 Mercury?

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 B2250 Mercury 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 B2250 Mercury code?

Need more information on how to fix the B2250 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2250 Mercury 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 B2250 Mercury Code

1. What are the common symptoms of OBDII code B2250 (Mercury) - All Doors Unlock Relay Circuit Failure?

- Common symptoms include difficulty unlocking all doors simultaneously, intermittent power door lock issues, and the inability to unlock doors using the remote key fob.

2. What are some possible causes of the OBDII code B2250 (Mercury) - All Doors Unlock Relay Circuit Failure?

- Potential causes may include a faulty all doors unlock relay, damaged wiring or connectors in the circuit, a malfunctioning power door lock switch, or a problem with the body control module (BCM).

3. How can I diagnose the OBDII code B2250 (Mercury) - All Doors Unlock Relay Circuit Failure?

- Diagnose the code by inspecting the all doors unlock relay, checking the wiring and connectors for any damage, testing the power door lock switch, and scanning the BCM for related error codes.

4. Can I still drive my Mercury if the OBDII code B2250 (All Doors Unlock Relay Circuit Failure) is present?

- Yes, you can still drive your vehicle with this code present, but it is recommended to address the issue promptly to avoid potential inconvenience or safety concerns related to door locking functions.

5. How can I repair the OBDII code B2250 (Mercury) - All Doors Unlock Relay Circuit Failure?

- Repair options may include replacing the faulty all doors unlock relay, repairing damaged wiring or connectors, replacing the power door lock switch, or reprogramming the BCM if necessary.

6. Are there any DIY tips for troubleshooting the OBDII code B2250 (Mercury) - All Doors Unlock Relay Circuit Failure?

- DIY tips include checking fuses related to the power door lock system, inspecting the relay for signs of damage, and using a multimeter to test the continuity of the circuit components.

7. Will resetting the OBDII code B2250 (Mercury) - All Doors Unlock Relay Circuit Failure make it go away permanently?

- Resetting the code may clear it temporarily, but if the underlying issue is not fixed, the code is likely to reappear after a certain period of driving or operation.

8. How much does it typically cost to repair the OBDII code B2250 (Mercury) - All Doors Unlock Relay Circuit Failure at a mechanic or dealership?

- Costs can vary depending on the specific cause of the issue, but repairs for this code may range from $100 to $300, including parts and labor.

9. Can extreme weather conditions or humidity affect the occurrence of the OBDII code B2250 (Mercury) - All Doors Unlock Relay Circuit Failure?

- Yes, extreme weather conditions or high humidity levels can potentially exacerbate electrical issues in the door lock circuit, leading to the triggering of this code.

10. Is the OBDII code B2250 (Mercury) - All Doors Unlock Relay Circuit Failure a common problem in Mercury vehicles?

- While not extremely common, issues related to the all doors unlock relay circuit can occur in Mercury vehicles, especially in older models or those with high mileage.