2005 Toyota PriusFACTORY OEM SERVICE PROCEDURE

HVAC DTCS

HVAC DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION

DTC Description
B1411 ROOM TEMPERATURE SENSOR CIRCUIT
B1412 AMBIENT TEMPERATURE SENSOR CIRCUIT
B1413 EVAPORATOR TEMPERATURE SENSOR CIRCUIT
B1421 SOLAR SENSOR CIRCUIT (PASSENGER SIDE)
B1423 PRESSURE SWITCH CIRCUIT
B1431 AIR MIX DAMPER POSITION SENSOR CIRCUIT (PASSENGER SIDE)
B1432 AIR INLET DAMPER POSITION SENSOR CIRCUIT
B1433 AIR OUTLET DAMPER POSITION SENSOR CIRCUIT
B1441 AIR MIX DAMPER CONTROL SERVOMOTOR CIRCUIT (PASSENGER SIDE)
B1442 AIR INLET DAMPER CONTROL SERVOMOTOR CIRCUIT
B1443 AIR OUTLET DAMPER CONTROL SERVOMOTOR CIRCUIT
B1462 ROOM HUMIDITY SENSOR CIRCUIT
B1471 A/C INVERTER HIGH VOLTAGE POWER RESOURCE SYSTEM MALFUNCTION
B1472 A/C INVERTER HIGH VOLTAGE OUTPUT SYSTEM MALFUNCTION
B1473 A/C INVERTER START-UP SIGNAL SYSTEM MALFUNCTION
B1475 A/C INVERTER COOLING/HEATING SYSTEM MALFUNCTION
B1476 A/C INVERTER LOAD SYSTEM MALFUNCTION
B1477 A/C INVERTER LOW VOLTAGE POWER RESOURCE SYSTEM MALFUNCTION
B1498 COMMUNICATION MALFUNCTION (A/C INVERTER LOCAL)
P3009 HIGH VOLTAGE POWER SHORT CIRCUIT
Factory Service Tools

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When to See a Mechanic

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

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