Jeep Grand Wagoneer 2022–2023 — technical service bulletin
Bulletin 0901123 · NHTSA communication 10241072 · issued Jun 8, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2022–2023
model years
4
vehicle entries
Official summary
Turbo to Charge Air Cooler Quick Connect Loose 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: ? P0101 - Mass Air Flow Sensor Circuit Performance. ? P0236 - Turbocharger/Supercharger Boost Pressure Sensor Performance. Customers may also comment on the following: ? Reduced engine performance. This bulletin involves inspecting turbo to charge air cooler quick connect at the turbo, performing a push-pull push verification check on the qu
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.