HVAC Module DTC Table
HVAC MODULE DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description | Action |
|---|---|---|
| B1C83:12 | Rear Defog Relay: Circuit Short to Battery | For MKZ, GO to Pinpoint Test L
. For Fusion, GO to Pinpoint Test N . |
| B1C83:14 | Rear Defog Relay: Circuit Short to Ground or Open | If the rear window does not defrost, GO to Pinpoint Test L
(MKZ) or GO to Pinpoint Test N
(Fusion). If the rear window defrost does not turn off, GO to Pinpoint Test M (MKZ) or GO to Pinpoint Test O (Fusion). |
| All other DTCs | - | REFER to the Master DTC Chart in CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS or CLIMATE CONTROL SYSTEM - GENERAL INFORMATION AND DIAGNOSTICS - HYBRID . |