B1591 - Autolamp Delay Decrease Circuit Failure

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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B1591 Possible Causes

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

First diagnose B1591 code

    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 terminals.

Cost of diagnosing the B1591 code

    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.

B1591 Possible Symptoms

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

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 - AutoCodes.com

B1591 More Information

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B1591 Information for specific makes

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B1591 Comments

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