P0456 on the 2020 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 |
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| S2008000112 | 2023-01-09. Service bulletin. MIL Lamp On Setting DTC?s P0441, P0456, P0457, P0440 |
| S2008000112 | 2022-09-26. Service bulletin. MIL Lamp On Setting DTC?s P0441, P0456, P0457, P0440 |
| 1808919 | 2022-09-15. Service bulletin. wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK |
| S2125000002RevA | 2022-09-15. Service bulletin. Customer complaint includes a Mil-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM: P0456 - EVAP System Small Leak P0455 - EVAP System Large Leak P04EC - EVAP System Large Leak - Fuel Tank Side (PHEV only) P04EE - EVAP System Very Small Leak - Fuel Tank Side (PHEV only) P0441 - EVAP Purge Flow Performance P1CEA - Boost Side EVAP Purge System Performance |
| S2125000002 | 2022-08-22. Service bulletin. Customer complaint includes a Mil-on condition. Upon further investigation, one or more of the following fault codes may be set in the PCM: P0456 - EVAP System Small Leak P0455 - EVAP System Large Leak P04EC - EVAP System Large Leak - Fuel Tank Side (PHEV only) P04EE - EVAP System Very Small Leak - Fuel Tank Side (PHEV only) P0441 - EVAP Purge Flow Performance P1CEA - Boost Side EVAP Purge System Performance |
| S2008000112 | 2020-08-24. Service bulletin. MIL Lamp On Setting DTC?s P0441, P0456, P0457, P0440 |
| S2025000004 | 2020-05-26. Service bulletin. Customer complains of the MIL lamp on. Technician observes DTC P0456 EVAP System Small Leak or P0455 EVAP System Large Leak detected set in PCM. |
| 18-089-19 | 2019-12-16. Service bulletin. wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK |
9 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.