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Service bulletins for the 2023 Jeep Wrangler

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

527 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Engine are shown. Show all

Bulletins, newest first
08120232023-07-31. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN; ENGINE AND ENGINE COOLING. Flash: Drivetrain Control Module (DTCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) or warning lamp illumination. Upon further investigation the technician may find that the multiple Diagnostic Trouble Codes (DTCs) have been set: ? C1403-29 - Transfer Case Range Position Sensor-Signal Invalid. ? C14AA-62 - Transfer Case Motor Position Sensor Supply-Signal Compare Failure. This bulletin involves reprogramming the DTCM with the latest software available.
07004232023-07-31. Service bulletin. ENGINE AND ENGINE COOLING; STRUCTURE. Coolant Overflow Bottle Leaking Coolant Leak. This bulletin involves inspection the overflow coolant bottle for leaks and replacing it if needed.
91001432023-07-31. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:CRANK/CAMSHAFT POSITION SENSOR. PSU right intake camshaft Case 1) If you are to flash the PSU (Pentastar Upgrade Engine) PCM due to P0300 code presence, only AB or previous LEVEL PSU right intake camshaft PN 05047913AA or AB (old version) should be replaced. If the engine is equipped with the AC/AD LEVEL PSU right intake camshaft PN 05047913AC or AD (new version), camshaft should NOT be replaced. Case 2) If the intake camshaft or intake rocker arm has excessive wear on the high lift profile (Rocker arm: slider, Camshaft: central lobe), replace the intake camshaft (1) in that cylinder head and all intake rocker arms (6).
09009232023-05-30. Service bulletin. ENGINE AND ENGINE COOLING. Engine Ticking Noise Engine makes an abnormal ticking noise. There may be Diagnostic Trouble Codes (DTC)s present. This bulletin involves inspecting and if needed, replacing the intake HLAs.
18048232023-05-30. Service bulletin. EQUIPMENT; ENGINE AND ENGINE COOLING. wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK
9003357a2023-04-17. Service bulletin. ENGINE AND ENGINE COOLING. ADAPTER, Engine Oil Filter (Pentastar V6) For all 2014MY replace the Oil Filter Adapter (OFA). For any other MY review and follow instructions from the latest STAR Online S1809000007 available on Dealer Connect. Also, consider the following: 1) Remove OFA 2) Replace only the oil inlet O-ring and gaskets (seals kit in SOL above). 3) Re-install the OFA. For 2023MY and beyond use black O-ring. For 2022MY and prior use red O-ring. Note: When replacing OFA, it may be necessary to transfer the Oil Temp/Pressure Sensor from the old OFA to the new OFA.
90033572023-04-17. Service bulletin. ENGINE AND ENGINE COOLING. ADAPTER, Engine Oil Filter (Pentastar V6) For all 2014MY replace the Oil Filter Adapter (OFA). For any other MY (with mileage above 30,000) review and follow instructions from STAR Online S1809000007 REV. C available on Dealer Connect. Also, consider the following: 1) Remove OFA 2) Replace only the oil inlet O-ring and gaskets (seals kit in SOL above). 3) Re-install the OFA. For 2023MY and beyond use black O-ring. For 2022MY and prior use red O-ring. Note: When replacing OFA, it may be necessary to transfer the Oil Temp/Pressure Sensor from the old OFA to the new OFA.
91001322023-04-17. Service bulletin. ENGINE AND ENGINE COOLING. ENGINE ASSY - 3.6L AUTO TRANS Before replacing the engine due to an abnormal ticking noise, please check that the INTAKE Hydraulic Lash Adjusters are not "collapsed". If a collapsed INTAKE HLA is found, replace all INTAKE HLAs on the suspect cylinder head. The noise can occur at low or high RPMs, and at low or high temperatures. There are no Diagnostic Trouble Codes (DTC)s present. CAUSE: INTAKE Hydraulic Lash Adjuster may have a manufacturing issue that can cause the plunger to stick, generating valvetrain noise.
91001212023-02-13. Service bulletin. ENGINE AND ENGINE COOLING. Battery Heater If you are looking for the Electronic Coolant Heater (ECH) for DTC P0E15 please order the latest level part number 68443445A$.
91001162023-02-13. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. Valve - Coolant JL PHEV Hoses to 3-Way valve coolant hoses misroute causes P0E80-00. Check hose routing as outlined in Star Online Publication S2208000205 or on a known good vehicle before replacing valve. Routing hoses correctly will likely fix the issue.
18154222023-01-23. Service bulletin. ENGINE AND ENGINE COOLING. Multiple Cylinder Misfire.
91001032023-01-17. Service bulletin. ENGINE AND ENGINE COOLING. Engine Oil - 0W20,Fluid - ATF+4,Engine Oil - 10W30,Engine Oil - 5W20,Engine Oil - 5W30
S22080002052023-01-17. Service bulletin. ENGINE AND ENGINE COOLING. Three Way Coolant Valve Hoses Misrouted. P0E80-00-Coolant Bypass Valve "B" Control Stuck Closed

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.