Engine-Codes - Buick - B1448 Buick

B1448 Buick Code - Accessory Power Relay Circuit

- Code Popularity: 830 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
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What are the Possible Causes of the DTC B1448 Buick?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other 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)
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How to Fix the DTC B1448 Buick?

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 pins.

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What is the Cost to Diagnose the Code?

Labor: 1.0

The cost to diagnose the B1448 Buick code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

What Does the B1448 Buick Code Mean?

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.

B1448 Buick Code - Accessory Power Relay Circuit

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