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Home >> Buick >> 2012 >> Regal Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 227 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> DTC B2485 >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2011 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
  1. Replace the T4S Wireless Communication Antenna - Bluetooth.
  2. Clear the DTCs and operate the vehicle within the conditions for running the DTC. Verify DTC B2485 does not set.
    • If the DTC sets, replace the T4S Wireless Communication Antenna - Bluetooth.
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