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2011 Lexus HS 250h - Codes

Power steering: U0073 - Control Module Communication Bus “A” Off U0124 - Lost Communication With Lateral Acceleration Sensor Module U0126 - Lost Communication With Steering Angle Sensor Module U0293 - Lost Communication With Hybrid Powertrain Control Module

And the question is…???

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Animal, Vegetable, or Mineral?

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Those look like brake control faults, not power steering. Problem could be with the CAN communication line, Skid control ECU, yaw rate sensor or steering angle sensor.