U0140 on the 2011 Jeep Wrangler
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| 18-024-16 | 2022-10-24. Service bulletin. 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. |
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| 18-024-16 | 2018-06-11. Service bulletin. 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. A | 2018-06-11. Service bulletin. 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. B | 2016-11-07. Service bulletin. "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)." |
4 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.