AutoCodes – Generic – B1592

B1592 Code - Autolamp Delay Decrease Circuit Open

Quick Answer

The Body Control Module (BCM) monitors the Autolamp Delay. Common causes include Faulty Autolamp Delay, Autolamp Delay harness is open or shorted, Autolamp Delay 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: B1592 indicates Autolamp Delay Decrease Circuit Open.
Common causes: Common causes include Faulty Autolamp Delay, Autolamp Delay harness is open or shorted, Autolamp Delay 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 4,343

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 May 05, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1592 Description

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

OBDII Code B1592 - Autolamp Delay Decrease Circuit Open - AutoCodes.com — B1592 Code - Autolamp Delay Decrease Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1592?

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

How to Fix the DTC B1592?

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 B1592 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 B1592 code?

Need more information on how to fix the B1592 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1592 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 B1592 Code

1. What are the common symptoms of OBDII code B1592 Autolamp Delay Decrease Circuit Open?

The common symptoms include the autolamp delay function not working, automatic headlights failing to turn on or off properly, and the interior lights not functioning correctly.

2. What are some possible causes of OBDII code B1592 Autolamp Delay Decrease Circuit Open?

Possible causes of this code include a faulty autolamp delay relay, a damaged wiring harness, a blown fuse, or a problem with the autolamp delay switch.

3. How can I diagnose the issue related to OBDII code B1592 Autolamp Delay Decrease Circuit Open?

To diagnose this issue, you can start by checking the autolamp delay relay, inspecting the wiring harness for any visible damage or corrosion, testing the continuity of the circuit, and verifying the functionality of the autolamp delay switch.

4. Can I repair OBDII code B1592 Autolamp Delay Decrease Circuit Open myself?

Depending on your level of mechanical expertise, you may be able to repair this issue yourself by replacing the faulty autolamp delay relay, repairing any damaged wiring, or addressing any other identified problems. However, if you are unsure, it's best to consult a professional mechanic.

5. Are there any specific tools required to fix OBDII code B1592 Autolamp Delay Decrease Circuit Open?

Basic tools such as a multimeter, wire crimpers, and a socket set may be necessary to diagnose and repair the issue related to this OBDII code. Additionally, a wiring diagram for your vehicle's autolamp system can be helpful.

6. How critical is it to address OBDII code B1592 Autolamp Delay Decrease Circuit Open promptly?

While this issue may not directly impact the drivability of your vehicle, it is essential to address it promptly to ensure the proper functioning of the autolamp delay feature, which contributes to the safety and convenience of your vehicle.

7. Can OBDII code B1592 Autolamp Delay Decrease Circuit Open cause other electrical problems in the vehicle?

If left unaddressed, this code can potentially lead to other electrical issues in the vehicle, such as draining the battery due to lights not turning off properly or affecting the overall functionality of the lighting system.

8. Will resetting the OBDII code B1592 Autolamp Delay Decrease Circuit Open resolve the issue?

Simply resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the code. It is crucial to diagnose and repair the issue to prevent the code from reappearing.

9. Is OBDII code B1592 Autolamp Delay Decrease Circuit Open a common issue in certain vehicle makes and models?

This code can be more prevalent in vehicles equipped with autolamp delay features, particularly in certain makes and models that may have specific wiring or relay issues related to this circuit.

10. How can I prevent OBDII code B1592 Autolamp Delay Decrease Circuit Open from occurring in the future?

Regularly inspecting and maintaining the autolamp system, addressing any wiring or relay issues promptly, and following the manufacturer's recommended service schedule can help prevent this code from occurring in the future.