2003 Ford Windstar BaseFACTORY OEM SERVICE PROCEDURE

Climate Control System DTCS

POWERTRAIN CONTROL MODULE (PCM) DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Action/Go to
P1460 Wide open throttle A/C cut-out circuit inoperative SELF-DIAGNOSTICS DTC 
P1461 A/C pressure sensor circuit high input SELF-DIAGNOSTICS DTC 
P1462 A/C pressure sensor circuit low input SELF-DIAGNOSTICS DTC 
P1463 A/C pressure sensor insufficient pressure change SELF-DIAGNOSTICS DTC 
P1464 A/C demand out of self-test range SELF-DIAGNOSTICS DTC 
P1469 Low A/C cycling period SELF-DIAGNOSTICS DTC 
INSTRUMENT CLUSTER MODULE (ICM) DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Source Action/Go to
B1249 Blend Door Failure ICM PINPOINT TEST P
B1676 Battery Voltage Out of Range ICM PINPOINT TEST A
B2175 A/C Request Signal Circuit Short to Ground ICM PINPOINT TEST F
C1779 Blower Switch Failure ICM PINPOINT TEST I
U1131 SCP (J1850) Invalid or Missing Data for Fuel System REM PINPOINT TEST D
FRONT ELECTRONIC MODULE (FEM) DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Source Action/Go to
B2510 Main Blower Motor Relay Circuit Short to Battery FEM PINPOINT TEST I
U1178 SCP (J1850) Invalid or Missing Data for Climate Control (HVAC) ICM CARRY OUT the IC self-test.
U1262 SCP (J1850) Communication Bus Fault - Refer to MODULE COMMUNICATIONS NETWORK .
REAR ELECTRONIC MODULE (REM) DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC Description Source Action/Go to
B2539 Aux A/C Mode Position Reference Circuit Short to Ground (Invalid) REM PINPOINT TEST O
B2540 Aux A/C Mode Position Reference Circuit Short to Battery REM PINPOINT TEST O
B2543 Aux A/C Control Switch Reference Circuit Short to Ground (Invalid) REM PINPOINT TEST R
B2544 Aux A/C Control Switch Reference Circuit Short to Battery REM PINPOINT TEST R
B2559 Aux A/C Blower Motor Relay Circuit Short to Battery REM PINPOINT TEST M
B2560 Aux A/C Blower Motor Relay Circuit Short to Ground REM PINPOINT TEST M
B2561 Aux A/C Blower Speed 1 Circuit Failure REM PINPOINT TEST M
B2562 Aux A/C Blower Speed 1 Circuit Short to Ground REM PINPOINT TEST M
B2563 Aux A/C Blower Speed 2 Circuit Failure REM PINPOINT TEST M
B2564 Aux A/C Blower Speed 2 Circuit Short to Ground REM PINPOINT TEST M
U1178 SCP (J1850) Invalid or Missing Data for Climate Control (HVAC) ICM CARRY OUT the IC self-test.
U1262 SCP (J1850) Communication Bus Fault - Refer to MODULE COMMUNICATIONS NETWORK
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.

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