Jeep Wrangler 2021 — technical service bulletin
Bulletin 1807323 · NHTSA communication 10243242 · issued Aug 8, 2023
Technical service bulletin
communication type
Power Train
component
2021
model years
1
vehicle entries
Official summary
Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? **U115F-00 - Lost Communication With Driver Presence Detection Module.** ? P02EE - Cylinder 1 Injector Circuit Performance. ? P02EF - Cylinder 2 Injector Circuit Performance. ? P02F0 - Cylinder 3 Injector Circuit Performance. ? P02F1 - Cylinder 4 Injector Circuit Performance. The customer may also experience one or more of the following wh
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.