This bulletin applies to 2009 BMW 328i vehicles equipped with the N51 engine.
The cause is DME diagnostic software error.
When performing the EAC function test module, the EAC sensor may show an implausible temperature status, e.g. 0 degrees C in relation to the ambient temperature. Since this function test is performed on a cold engine (less than 40 degrees C), both values should be similar.
Reprogram the vehicle using the current ISTA/P version 2.40.0 or higher. The vehicle integration level after reprogramming should be E89x-10-12-501 or higher.