AutoCodes – Mercury – B10E5 Mercury

B10E5 Mercury Code - Wake up Control Circuit Short

Quick Answer

The wake up control circuit is used to wake up the Powertrain Control Module (PCM) prior to engine cranking. Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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: B10E5 Mercury indicates Wake up Control Circuit Short.
Common causes: Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 1,177

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 Nov 19, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B10E5 Mercury Description

The wake up control circuit is used to wake up the Powertrain Control Module (PCM) prior to engine cranking. The PCM needs to wake up prior to a crank request so that it has time to go through its own initialization. The wake up control circuit is controlled by the Body Control Module (BCM). The OBDII set when the BCM detects a short to ground or voltage on the wake up control circuit.

OBDII Code B10E5 Mercury - Wake up Control Circuit Short - AutoCodes.com — B10E5 Mercury Code - Wake up Control Circuit Short

What does this mean?

What are the Possible Causes of the DTC B10E5 Mercury?

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

How to Fix the DTC B10E5 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 does this mean?

Code Tech Notes

B10E5:11 Wake up Control: Circuit Short To Ground
B10E5:15 Wake up Control: Circuit Short To Battery or Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B10E5 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 B10E5 Mercury code?

Need more information on how to fix the B10E5 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B10E5 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 B10E5 Mercury Code

1. What are the common symptoms of OBDII code B10E5 in a Mercury vehicle?

- Common symptoms include intermittent or constant illumination of the airbag warning light on the dashboard and potential loss of functionality of the airbag system.

2. What does the OBDII code B10E5 in a Mercury indicate?

- The B10E5 code specifically refers to a "Wake up Control Circuit Short" related to the airbag system in the vehicle.

3. What are the possible causes of the B10E5 OBDII code in a Mercury?

- The code can be triggered by issues such as a short circuit in the wake up control circuit, damaged wiring, faulty connectors, or a malfunctioning airbag control module.

4. How can I diagnose the B10E5 OBDII code in my Mercury?

- Diagnosis typically involves using a professional OBDII scanner to retrieve the specific trouble code, followed by inspecting the wiring, connectors, and components associated with the airbag system for any visible damage or issues.

5. Can I continue driving my Mercury with the B10E5 code present?

- It is not recommended to drive the vehicle with the B10E5 code illuminated, as it indicates a potential issue with the airbag system, compromising passenger safety in the event of a collision.

6. How can I repair the B10E5 OBDII code in my Mercury?

- Repairing the B10E5 code may involve fixing the short circuit in the wake up control circuit, repairing or replacing damaged wiring and connectors, or replacing the faulty airbag control module.

7. Is it safe to reset the B10E5 OBDII code in my Mercury using an OBDII scanner?

- While you can clear the code with an OBDII scanner, it is crucial to address the underlying issue causing the B10E5 code to prevent potential safety risks associated with the airbag system.

8. Can a DIY enthusiast fix the B10E5 OBDII code in a Mercury?

- Depending on the individual's experience and knowledge, some DIY enthusiasts may be able to address the B10E5 code by following repair guides and procedures, but professional assistance is recommended for accurate diagnosis and repair.

9. How much does it typically cost to repair the B10E5 OBDII code in a Mercury?

- The cost of repairing the B10E5 code can vary depending on the underlying issue, parts needed for replacement, and labor costs. It's advisable to obtain quotes from reputable mechanics or service centers.

10. Will the B10E5 OBDII code reset itself after repairs are made in a Mercury?

- After the underlying issue triggering the B10E5 code is repaired, you may need to use an OBDII scanner to clear the trouble code manually. If the issue is resolved, the code should not reappear.