2005 Ford ThunderbirdFACTORY OEM SERVICE PROCEDURE

DATC DTCS

DUAL ELECTRONIC AUTOMATIC TEMPERATURE CONTROL (DATC) MODULE DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Run-Time (Intermittent) Faults or Self-Test (Hard) Faults Description Action to Take
B1242 1242 Recirculation door actuator circuit failure GO to PINPOINT TEST C .
B1251 1251 In-vehicle temperature sensor circuit open GO to PINPOINT TEST D .
B1253 1253 In-vehicle temperature sensor circuit short to ground GO to PINPOINT TEST D .
B1255 1255 Ambient air temperature sensor open GO to PINPOINT TEST F .
B1257 1257 Ambient air temperature sensor short to ground GO to PINPOINT TEST F .
B1259 1259 A/C solar radiation sensor open circuit GO to PINPOINT TEST G .
B1261 1261 A/C solar radiation sensor circuit short to ground GO to PINPOINT TEST G .
B1262 1262 Defrost door actuator circuit failure GO to PINPOINT TEST C .
B1263 1263 Panel door actuator circuit failure GO to PINPOINT TEST C .
B1264 1264 Floor door actuator circuit failure GO to PINPOINT TEST C .
B1265 1265 Cold air bypass door actuator circuit failure Invalid code. Vehicle not equipped with cold air bypass door actuator. Ignore this code and continue diagnostics.
B1342 1342 ECU defective INSTALL a new DATC module.
B1676 1676 Battery voltage out of range -
B1946 1946 Evaporator discharge temperature sensor open circuit GO to PINPOINT TEST E .
B1947 1947 Evaporator discharge temperature sensor circuit short to ground GO to PINPOINT TEST E .
B1966 1966 Driver heater core discharge temperature sensor open circuit GO to PINPOINT TEST E .
B1967 1967 Driver heater core discharge temperature sensor short circuit GO to PINPOINT TEST E .
B2428 2428 Passenger heater core discharge temperature sensor open circuit GO to PINPOINT TEST E .
B2429 2429 Passenger heater core discharge temperature sensor short circuit GO to PINPOINT TEST E .
B2477 2477 Module configuration failure RECONFIGURE the DATC module.
B2797 2797 Driver coolant control valve open circuit GO to PINPOINT TEST J .
B2798 2798 Driver coolant control valve circuit short to ground GO to PINPOINT TEST H .
B2799 2799 Passenger coolant control valve open circuit GO to PINPOINT TEST J .
B2800 2800 Passenger coolant control valve circuit short to ground GO to PINPOINT TEST H .
U1041 - SCP invalid or missing data for function read vehicle speed See INTRODUCTION - GASOLINE article .
U1073 - SCP invalid or missing data for engine coolant See INTRODUCTION - GASOLINE article .
U1027 - SCP invalid or missing data for engine RPM See INTRODUCTION - GASOLINE article .
U1178 - SCP invalid or missing data for voice command This code will only appear if the vehicle is equipped with voice command.
U1222 - SCP invalid or missing data for interior lamps -
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:

  • 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.

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