2008 Scion xD AutomaticFACTORY OEM SERVICE PROCEDURE

HVAC DTCS

HVAC DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DTC Description
B1412 Ambient Temperature Sensor Circuit
B1413 Evaporator Temperature Sensor Circuit
B1423 Pressure Sensor Circuit
B1451 Compressor Solenoid Circuit
B1499 Communication Malfunction (Engine and Meter ECU)
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.