25-003-15

Diesel Exhaust Fluid (DEF) Contamination This bulletin involves replacing the Diesel Exhaust Fluid (DEF) system components. A small number of DEF systems may have been accidently contaminated during manufacturing. With this contamination there may be a Malfunction Indicator Lamp (MIL) illuminated. Upon further investigation, a technician may find one or more of the following Diagnostic Trouble Codes (DTCs). ? P20EE - SCR NOX Catalyst Efficiency Below Threshold Bank 1. ? P2BA9 - NOX Exceedence - Insufficient Reductant Quality. ? P20E8 - Reductant Pressure Too Low. ? P20E9 - Reductant Pressure Too High.