P0456 on the 2012 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.
| 1804823 | 2023-05-30. Service bulletin. wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK |
|---|---|
| 1802413 | 2022-09-26. Service bulletin. Flash: MIL Illumination P0830- Clutch Upstop Switch Rationality or P0456- Evap System Small Leak This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find that the following Diagnostic Trouble Codes have been set: P0830- Clutch Upstop Switch Rationality P0456 - Evap System Small LeakThe correction for Diagnostic Trouble Code P0456 only applies to 2013 Model Year vehicles. |
| 18-024-13 | 2021-03-22. Service bulletin. Flash: MIL Illumination P0830- Clutch Upstop Switch Rationality or P0456- Evap System Small Leak This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find that the following Diagnostic Trouble Codes have been set: P0830- Clutch Upstop Switch Rationality P0456 - Evap System Small LeakThe correction for Diagnostic Trouble Code P0456 only applies to 2013 Model Year vehicles. |
| 18-024-13 | 2018-05-21. Service bulletin. Flash: MIL Illumination P0830- Clutch Upstop Switch Rationality or P0456- Evap System Small Leak This bulletin involves selectively erasing and reprogramming the Powertrain Control Module (PCM) with new software. A small number of customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the Technician may find that the following Diagnostic Trouble Codes have been set: P0830- Clutch Upstop Switch Rationality P0456 - Evap System Small LeakThe correction for Diagnostic Trouble Code P0456 only applies to 2013 Model Year vehicles. |
| 18-025-16 REV. A | 2017-11-03. Service bulletin. Flash: Powertrain 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 (DTCs): · **P0456 - EVAP System Small Leak (13 MY 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. |
5 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.