Engine Controls - 2AD8 EAC Sensor Code Stored/MIL ON
SI B12 16 07
Engine Electrical Systems
March 2011 Technical Service
This Service Information bulletin supersedes SI B12 16 07 dated January 2011. [NEW] designates changes to this revision
SUBJECT
N51 - EAC Sensor Fault 2AD8
MODEL
E90, E92, E93 (3 Series) with the N51 engine
[NEW] E82 and E88 (1 Series) with the N51 engine SITUATION
The "Service Engine Soon" lamp is on and the fault code: "2AD8 - EAC Sensor, monitoring - implausible in relation to engine coolant temperature, radiator outlet" is stored in the DME.
CAUSE
DME diagnostic software error
Note:
When performing the EAC function check test module, the EAC sensor may show an implausible temperature status, e.g., 0锟斤拷C in relation to the ambient temperature. Since this function test is performed on a cold engine (< 40锟斤拷C), both values should be similar.
CORRECTION
Reprogram the vehicle using the current ISTA/P version (2.40.0 or higher). The vehicle integration level after programming should be E89x-10-12-501 or higher.
