Some 2020-2022 Escape plug-in hybrid electric vehicle (PHEV) and 2021-2022 Corsair PHEV vehicles built on or before 3-Mar-2022 may exhibit an illuminated malfunction indicator lamp (MIL) and/or engine coolant over temperature warning message with Diagnostic Trouble Code (DTC) P2183 stored in the powertrain control module (PCM). DTC P26C1 may also be present due to DTC P2183 setting. This condition occurs when the vehicle is driven with the cabin coolant heater active and after an engine long soak the DTC P2183 will incorrectly set at next key on. This may be due to the soak timer feature in the PCM that miscalculates the heater off soak timer. To correct the condition, follow the Service Procedure to reprogram various modules starting with the PCM.
