AutoCodes – Generic – B10E5

B10E5 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 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.

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Code Popularity 4,030

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

What does this mean?

What are the Possible Causes of the DTC B10E5?

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?

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 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.

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Need Help with the Code?

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Information for Specific Makes

B10E5 Ford — Wake up Control Circuit Short
B10E5 Lincoln — Wake up Control Circuit Short
B10E5 Mercury — Wake up Control Circuit Short

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 Code

1. What are the common symptoms of OBDII code B10E5 (Wake up Control Circuit Short)?

The common symptoms include the vehicle's inability to start, intermittent starting issues, and the illumination of the check engine light.

2. What are the possible causes of OBDII code B10E5?

Possible causes of this code include a short circuit in the wake-up control circuit, damaged wiring or connectors, or a faulty control module.

3. How can I diagnose the OBDII code B10E5?

Diagnosis involves using a scan tool to retrieve the trouble codes, inspecting the wiring and connectors for damage, and testing the control module for proper functionality.

4. Can I still drive my vehicle with OBDII code B10E5?

It is not recommended to drive the vehicle with this code present, as it can lead to starting issues and potential further damage to the vehicle's electrical system.

5. How can I repair OBDII code B10E5?

Repairing this code typically involves repairing any damaged wiring or connectors in the wake-up control circuit, replacing the faulty control module if necessary, and clearing the trouble codes.

6. Is it possible to reset the OBDII code B10E5 without fixing the underlying issue?

While you can clear the trouble code using a scan tool, it is not recommended to do so without addressing the root cause, as the issue may persist and lead to further problems.

7. Can a DIY enthusiast fix OBDII code B10E5 at home?

Depending on your level of experience with automotive repairs and diagnostics, it may be possible to address this code at home by following repair guides and using the necessary tools.

8. What happens if I ignore OBDII code B10E5?

Ignoring this code can lead to prolonged starting issues, potential damage to other electrical components, and an increased risk of the vehicle not starting at all.

9. Are there any common mistakes to avoid when dealing with OBDII code B10E5?

Common mistakes include overlooking damaged wiring, not properly securing connectors after repair, and failing to clear the trouble codes after completing the repairs.

10. How long does it typically take to repair OBDII code B10E5?

The repair time can vary depending on the specific cause of the code, but it may take anywhere from 1-3 hours to diagnose and fix the issue.