Jeep Wrangler 2020 — technical service bulletin
Bulletin 1807023 · NHTSA communication 10241090 · issued Jun 15, 2023
Technical service bulletin
communication type
Power Train
component
2020
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: ? **P02EE - CYLINDER 1 INJECTOR CIRCUIT PERFORMANCE. ? P02EF - CYLINDER 2 INJECTOR CIRCUIT PERFORMANCE. ? P02F0 - CYLINDER 3 INJECTOR CIRCUIT PERFORMANCE. ? P02F1 - CYLINDER 4 INJECTOR CIRCUIT PERFORMANCE. ** ? P0335 - Crankshaft Position Sensor Circuit. ? P0339 - Crankshaft Position Sensor Intermittent. ? P2C90 - Crankcase Ventilation Syste
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.