Electronic Automatic Temperature Control (EATC) Module Diagnostic Trouble Code (DTC) Index
WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
All DTCs can be retrieved as an on-demand (hard fault) or continuous (intermittent fault) fault. If a continuous (intermittent) fault, the degrees Celsius symbol (°C) will be displayed in addition to the DTCs.
DIAGNOSTIC TROUBLE CODE INDEX
| DTC | Description | Action to Take |
|---|---|---|
| B1200 | Stuck Button | Button held too long may set DTC. Attempt to clean buttons. If code returns, INSTALL a new EATC module. REFER to AIR DISTRIBUTION & FILTERING . |
| B1251 | In-Vehicle Temperature Sensor Open Circuit | GO to PINPOINT TEST A . |
| B1253 | In-Vehicle Temperature Sensor Circuit Short to Ground | GO to PINPOINT TEST A . |
| B1255 | Ambient Temperature Sensor Open Circuit | GO to PINPOINT TEST B . |
| B1257 | Ambient Temperature Sensor Circuit Short to Ground | GO to PINPOINT TEST B . |
| B2795 | LH A/C Solar Radiation Sensor Circuit Short to Ground | GO to PINPOINT TEST C . |
| B2796 | LH A/C Solar Radiation Sensor Open Circuit | GO to PINPOINT TEST C . |
| B1242 | Air Inlet Door Short/Failure | GO to PINPOINT TEST D . |
| B2266 | LH Blend Door Failure or Short | GO to PINPOINT TEST K . |
| B2267 | RH Blend Door Failure or Short | GO to PINPOINT TEST K . |
| B1003 | Mode Door Short/Failure | GO to PINPOINT TEST E . |
| B2916 | Auxiliary Blend Door Failure | GO to PINPOINT TEST R . |
| B2917 | Auxiliary Mode Door Failure | GO to PINPOINT TEST S . |
| B2918 | Auxiliary Temperature Input Circuit Open/Short to Ground | GO to PINPOINT TEST R . |
| B2919 | Auxiliary Blower Motor Speed Input Circuit Open/Short to Ground | GO to PINPOINT TEST Q . |
| B1342 | EATC Module Faulted | INSTALL a new EATC module. REFER to AIR DISTRIBUTION & FILTERING . |