Service bulletins for the 2020 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.
1020 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Alternator are shown. Show all
| S2118000011 | 2022-09-26. Service bulletin. ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR:INTEGRATED STARTER(OTHER THAN PROPULSION). Diagnostic Trouble Code (DTC) P049B ? EGR B Insufficient Flow Detected, Additional Diagnostics. |
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| S2008000196 | 2021-03-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. Diagnostic Trouble Code (DTC) P065A ? Generator System Performance, Additional Information. |
| 09-007-20 | 2020-06-22. Service bulletin. ENGINE; ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR; EQUIPMENT. Inspect Hydraulic Belt Tensioner This bulletin involves inspecting the Julian date on the hydraulic belt tensioner for possible replacement. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the following Diagnostic Trouble Codes (DTCs) have been set:P2BA3-00 - Starter/Generator Mechanical Performance. P0A92-00 -Hybrid Generator Performance. Customers may also experience the following:Dead battery. The accessory drive belt may be slipping or belt noise. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.