Electronic Automatic Temperature Control (EATC) Module Diagnostic Trouble Code (DTC) Index

WARNING: This page is about a different car, the 2003 Ford Pickup, 2003 Ford F550 Super Duty, 2003 Ford F450 Super Duty, 2003 Ford Excursion, and 2003 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.

ELECTRONIC AUTOMATIC TEMPERATURE CONTROL MODULE DIAGNOSTIC TROUBLE CODE INDEX

DTC	EATC (Hard) Self-Test Faults	EATC (Intermittent) Run-Time Faults	Description	Action to Take
B2266	024	025	Blend door failure or short	GO to PINPOINT TEST A: DTC B2266 - BLEND DOOR FAILURE OR SHORT .
B1251	031	N/A	A/C in-car temperature sensor open circuit	GO to PINPOINT TEST B: DTC B1251 OR DTC1253 - A/C IN-CAR TEMPERATURE SENSOR OPEN CIRCUIT OR SHORT TO GROUND .
B1253	030	N/A	A/C in-car temperature sensor short to ground	GO to PINPOINT TEST B: DTC B1251 OR DTC1253 - A/C IN-CAR TEMPERATURE SENSOR OPEN CIRCUIT OR SHORT TO GROUND .
B1255	041	043	A/C ambient temperature sensor open circuit	GO to PINPOINT TEST C: DTC B1255 OR DTC B1257 - A/C AMBIENT TEMPERATURE SENSOR OPEN CIRCUIT OR SHORT TO GROUND .
B1257	040	042	A/C ambient temperature sensor short to ground	GO to PINPOINT TEST C: DTC B1255 OR DTC B1257 - A/C AMBIENT TEMPERATURE SENSOR OPEN CIRCUIT OR SHORT TO GROUND .
B1259	N/A	N/A	A/C solar radiation sensor circuit open	GO to PINPOINT TEST D: DTC B1259 OR DTC B1261 - SOLAR RADIATION SENSOR OPEN CIRCUIT OR SHORT TO GROUND .
B1261	050	052	A/C solar radiation sensor circuit short to ground	GO to PINPOINT TEST D: DTC B1259 OR DTC B1261 - SOLAR RADIATION SENSOR OPEN CIRCUIT OR SHORT TO GROUND .
U1073	N/A	-	SCP invalid or missing data for engine coolant	Refer to SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE or SELF-DIAGNOSTICS - 6.0L DIESEL or SELF-DIAGNOSTICS - 7.3L DIESEL . .
U1341	N/A	N/A	SCP invalid data for vehicle speed	Refer to SELF-DIAGNOSTICS - CNG, FLEX-FUEL & GASOLINE or SELF-DIAGNOSTICS - 6.0L DIESEL or SELF-DIAGNOSTICS - 7.3L DIESEL . .