B1448 GMC - Accessory Power Relay Circuit

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

B1448 GMC Possible Causes

  • Faulty Accessory Power Relay
  • Accessory Power Relay harness is open or shorted
  • Accessory Power Relay circuit poor electrical connection
  • Faulty Rear Wiper Motor
  • Faulty Body Control Module (BCM)

How do I fix code B1448 GMC

    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.

Cost of diagnosing the B1448 GMC code

    Labor: 1.0

    The cost of diagnosing the B1448 GMC 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.

B1448 GMC Possible Symptoms

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

B1448 GMC Meaning

The Body Control Module (BCM) supplies accessory voltage as required for the Rear Wiper Motor and controls the Rear wiper and washer relay through the accessory voltage circuit from BCM harness. The Diagnostic Trouble Code (DTC) will set only when the output is activated and there is a short to ground in the accessory voltage circuit.
OBDII Code B1448 GMC - Accessory Power Relay Circuit - Engine-Codes.com

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