DME FAULT CODE 1B8004 ENVIRONMENTAL AIR CATALYST(EAC) SENSOR: This Service Information Bulletin (Revision 1) replaces SI B13 02 18 dated April 2018. The Malfunction Indicator Lamp (MIL) light is on and the following fault code is stored in the DME: 1B8004 - EAC Sensor: Temperature - Engine coolant temperature radiator outlet comparison to each other implausible DME software calibration error for EAC sensor diagnostics.
