131-26007 Issue 3

Emira 4-Cylinder vehicles only - Issue 3 includes updated information on thermostat the testing method and replaces version 2 of this bulletin published on 05.08.2026. Diagnosing medium temperature engine coolant thermostat operation to prevent unnecessary thermostat replacement. The information in this bulletin is intended as a procedure that should be performed if a 4-cylinder Emira has generated Diagnostic Trouble Code (DTC) P2CEF00 Auxiliary Thermostat “A” Stuck Open (see image for thermostat location). Generation of DTC P2CEF00 may also result in: - Illumination of the Malfunction Indicator Lamp (MIL). - A low coolant temperature warning message being displayed. IMPORTANT: Do not continue with the procedure in this bulletin If DTC P2CEF00 has NOT BEEN generated. ACTION If DTC P2CEF00 has been generated, then raise a technical ticket on LCMS (Lotus Cars Management System) and follow the procedure shown in TSB.