# P2CEF on the 2027 Lotus Emira

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P2CEF

- [11038270](https://open.wenmarpro.com/bulletins/11038270), 2026-10-07: 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.