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Service bulletins for the 2011 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.

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

About U0140 on the 2011 Jeep Wrangler: what the code means, and the bulletins and recalls about the same components.

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By trouble code

Only bulletins with trouble code: U0140 are shown. Show all

Bulletins, newest first
18-024-162022-10-24. Service bulletin. FUEL SYSTEM, GASOLINE; EXTERIOR LIGHTING; STRUCTURE. Flash: 3.8L Diagnostic And System Improvements software. The customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Code (DTC): · U0140 Lost Communication With Body Control Module. Attempting to clear the DTC may be unsuccessful. Other enhancements included in this update: · Improved fuel pump relay operation. · Improved remote start time after key activation. · Improved Automatic Shutdown Relay (ASD) timer calibration.
18-024-162018-06-11. Service bulletin. POWER TRAIN; ELECTRICAL SYSTEM. Flash: 3.8L Diagnostic And System Improvements This bulletin involves reprogramming the Powertrain Control Module (PCM) with updated software. The customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Code (DTC): · U0140 Lost Communication With Body Control Module. Attempting to clear the DTC may be unsuccessful. Other enhancements included in this update: · Improved fuel pump relay operation. · Improved remote start time after key activation. · Improved Automatic Shutdown Relay (ASD) timer calibration.
18-024-16 REV. A2018-06-11. Service bulletin. ELECTRICAL SYSTEM. Flash: 3.8L Diagnostic And System Improvements software. The customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Code (DTC): · U0140 Lost Communication With Body Control Module. Attempting to clear the DTC may be unsuccessful. Other enhancements included in this update: · Improved fuel pump relay operation. · Improved remote start time after key activation. · Improved Automatic Shutdown Relay (ASD) timer calibration.
18-024-16 REV. B2016-11-07. Service bulletin. POWER TRAIN. "FLASH: POWERTRAIN DIAGNOSTIC AND SYSTEM IMPROVEMENTS THIS BULLETIN INVOLVES REPROGRAMMING THE POWERTRAIN CONTROL MODULE (PCM) WITH UPDATED SOFTWARE. THE CUSTOMER MAY EXPERIENCE A MALFUNCTION INDICATOR LAMP (MIL) ILLUMINATION OR NOTICE THAT THE FUEL SAVER INDICATOR LIGHT (FSI) IS TURNING ON AND OFF. UPON FURTHER INVESTIGATION THE TECHNICIAN MAY FIND ONE OR MORE OF THE FOLLOWING DIAGNOSTIC TROUBLE CODES (DTCS): · **P0452 - EVAP PRESSURE SWITCH STUCK CLOSED (10 MY WITH SALES CODE DEH ONLY).** · U0140 - LOST COMMUNICATION WITH BODY CONTROL MODULE. ATTEMPTING TO CLEAR THE DTC MAY BE UNSUCCESSFUL. OTHER ENHANCEMENTS INCLUDED IN THIS UPDATE: · IMPROVED FUEL PUMP RELAY OPERATION. · IMPROVED REMOTE START TIME AFTER KEY ACTIVATION. · IMPROVED AUTOMATIC SHUTDOWN RELAY (ASD) TIMER CALIBRATION. · FIX FOR FALSE (FSI) LIGHT ON (WITH COMBINATION SALES CODES EGT AND DEH)."

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