AutoCodes – Jeep – B1A87 Jeep

B1A87 Jeep Code - ESCL Unlock Control Circuit Short To Ground Or Open

Quick Answer

The OBDII code is set when the Body Control Module (BCM) detects an open or short to ground on the Daytime Running Lamp (DRL) Signal circuit (SRT only). Common causes include Faulty Daytime Running Lamp (DRL) Assembly, Daytime Running Lamp (DRL) Assembly harness is open or shorted, Daytime Running Lamp (DRL) Assembly 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: B1A87 Jeep indicates ESCL Unlock Control Circuit Short To Ground Or Open.
Common causes: Common causes include Faulty Daytime Running Lamp (DRL) Assembly, Daytime Running Lamp (DRL) Assembly harness is open or shorted, Daytime Running Lamp (DRL) Assembly 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 1,111

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Aug 14, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1A87 Jeep Description

The OBDII code is set when the Body Control Module (BCM) detects an open or short to ground on the Daytime Running Lamp (DRL) Signal circuit (SRT only).

OBDII Code B1A87 Jeep - ESCL Unlock Control Circuit Short To Ground Or Open - AutoCodes.com — B1A87 Jeep Code - ESCL Unlock Control Circuit Short To Ground Or Open

What does this mean?

What are the Possible Causes of the DTC B1A87 Jeep?

Faulty Daytime Running Lamp (DRL) Assembly
Daytime Running Lamp (DRL) Assembly harness is open or shorted
Daytime Running Lamp (DRL) Assembly circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1A87 Jeep?

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 B1A87 Jeep 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 B1A87 Jeep code?

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Need Help with the Code?

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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 B1A87 Jeep Code

1. What are the common symptoms of OBDII code B1A87 in a Jeep related to the ESCL Unlock Control Circuit?

The common symptoms include issues with the electronic steering column lock (ESCL) system, difficulty starting the vehicle, and the inability to shift out of park.

2. What are some possible causes of the ESCL Unlock Control Circuit short to ground or open in a Jeep?

Possible causes include damaged wiring in the ESCL circuit, a faulty ESCL module, or a loose connection within the system.

3. How can I diagnose the ESCL Unlock Control Circuit issue in my Jeep?

Diagnosing the issue typically involves using an OBDII scanner to retrieve the specific B1A87 fault code, inspecting the wiring and connections related to the ESCL system, and testing the ESCL module for proper functionality.

4. Can I still drive my Jeep with the B1A87 code related to the ESCL Unlock Control Circuit?

It is not recommended to drive the vehicle with this fault code present, as it can affect the operation of the electronic steering column lock system, potentially leading to safety issues or further damage.

5. How do I repair the ESCL Unlock Control Circuit short to ground or open in my Jeep?

Repairing the issue may involve repairing or replacing damaged wiring, ensuring proper connections in the ESCL system, or replacing the faulty ESCL module.

6. Is it possible to reset the B1A87 code related to the ESCL Unlock Control Circuit without repairs?

While clearing the code with an OBDII scanner may temporarily remove the warning light, it is important to address the underlying issue to prevent further problems with the ESCL system.

7. Are there any DIY tips for troubleshooting the B1A87 code in a Jeep?

DIY tips include visually inspecting wiring for damage, checking connections for tightness, and consulting the vehicle's service manual for specific diagnostic procedures related to the ESCL system.

8. Can extreme weather conditions contribute to the ESCL Unlock Control Circuit fault in a Jeep?

Yes, extreme temperature fluctuations or moisture exposure can potentially impact the ESCL system, leading to faults like the B1A87 code.

9. Will the B1A87 code related to the ESCL Unlock Control Circuit affect other vehicle systems in my Jeep?

While the primary impact is on the ESCL system, unresolved issues with the ESCL circuit could potentially affect other electronic systems in the vehicle over time.

10. How can a professional mechanic help with diagnosing and repairing the B1A87 fault code in a Jeep?

A professional mechanic will have the expertise and tools to accurately diagnose the issue, perform necessary repairs or replacements, and ensure that the ESCL system functions properly to clear the fault code.