Engine-Codes - Generic - B130C

B130C - Load Shed Control Circuit Short

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

B130C Possible Causes

  • Faulty Trailer Battery Charge Relay
  • Trailer Battery Charge Relay harness is open or shorted
  • Trailer Battery Charge Relay circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How is the B130C code repair?

Start by checking 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.

Tech Notes

B130C:12 Load Shed Control Circuit Short To Battery
B130C:14 Load Shed Control Circuit Short To Ground or Open

What is the cost to diagnose the B130C code

Labor: 1.0

The cost to diagnose the B130C 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.
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Possible Symptoms

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

B130C Meaning

The trailer battery charge relay coil receives voltage from the Battery Junction Box (BJB) fuse when the ignition is in RUN. The BJB fuse supplies voltage to the Trailer Battery Charge Relay switch side at all times. The Body Control Module (BCM) controls the ground side for the battery charge relay coil.
The BCM provides ground for the trailer battery charge relay when the ignition is in RUN and the BCM determines that the battery voltage is not low. When the trailer battery charge relay is energized, the voltage is routed to the trailer tow connector.

More Information

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