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AutoCodes - Generic - B1591

B1591 Code - Autolamp Delay Decrease Circuit Failure

- Code Popularity: 4,471 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
By - Updated May 05, 2019
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|Code B1591 Possible Causes

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

|How do I Fix the Code B1591?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Does your Car have Safety Recalls? → Check here

|What is the Cost to Diagnose the Code B1591?

Labor: 1.0

The cost of diagnosing the B1591 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are Code B1591 Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|Code B1591 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 B1591 - Autolamp Delay Decrease Circuit Failure -
B1591 Code - Autolamp Delay Decrease Circuit Failure

|Need More Information on the B1591 Code?

Need more information on how to fix the B1591 code? Get Access to Factory Service Manuals

|Information for Specific Makes

|Need Help with the B1591 Code?

Get the B1591 code diagnosed by a professional: Find a repair shop in your area

|Code B1591 comments

Help us improve Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the B1591 code? Have you replaced any parts?
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