B131A - Delayed Accessory Power Circuit Short

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What does this mean?

B131A Possible Causes

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

First diagnose B131A 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.

B131A Tech Notes

B131A:12 Delayed Accessory Power Circuit Short To Battery
B131A:14 Delayed Accessory Power Circuit Short To Ground or Open

Cost of diagnosing the B131A code

    Labor: 1.0

    The cost of diagnosing the B131A code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.

B131A Possible Symptoms

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

B131A Meaning

The Accessory Delay Relay is located in the Body Control Module (BCM). When the ignition is turned ON, the BCM activates the accessory delay relay by grounding the relay coil. When the ignition is turned to the OFF position, the BCM continues to ground the accessory delay relay coil for approximately 10 minutes, or until a front door is opened. When the accessory delay relay is active, it supplies voltage to the power window system. The OBDII sets when the BCM senses an open, short to voltage or short to ground on the accessory delay relay control circuit.
OBDII Code B131A - Delayed Accessory Power Circuit Short - Engine-Codes.com

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