Jeep Grand Cherokee 2014 — technical service bulletin
Bulletin 18-023-15 · NHTSA communication 10144840 · issued Mar 14, 2015
Technical service bulletin
communication type
Fuel System, Gasoline
component
2014
model years
1
vehicle entries
Official summary
Flash: 3.0 L MIL Illumination Diagnostic and System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with the latest available software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find one or more of the following Diagnostic Trouble Code(s) may have been set: ? P20C2 - Reductant Heater 3 Control Circuit Performance. ? P204F - Reductant System Performance. ? P20E9 - Reductant Pressure Too High. ? P0087-00 - Fuel Rail Pressure Too Low. ? P20EE-00 - SCR NOX Catalyst
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.