{"vehicle":{"id":"2019_dodge_durango","year":2019,"make":"Dodge","model":"Durango"},"code":"P0456","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":7,"bulletins":[{"nhtsa_id":11020116,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-07-02","date":"2025-06-25","document_id":"18-040-25","mfr_campaign":null,"component":"ELECTRICAL SYSTEM","summary":"Flash: Powertrain Control Module (PCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ** ● **P0420 - Catalyst System Efficiency Below Threshold Bank 1. ● P0430 - Catalyst System Efficiency Below Threshold Bank 2.** ● P0441 - EVAP Purge System Performance (for North America and Mexico markets only). ● P0456 - EVAP System Small Leak. NOTE: If DTC P0456 is present, use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. In addition, the customer may experience the following: ● **Vehicle fails emissions inspection testing due to OBD catalyst monitor readiness.** This bulletin involves reprogramming the PCM with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11020116-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11020116-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11020116"},{"nhtsa_id":10248616,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-01-08","date":"2023-09-16","document_id":"1810123","mfr_campaign":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM","summary":"Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) has been set: ?**P0441 - EVAP Purge System Performance (for North America and Mexico markets only).** ? P0456 - EVAP System Small Leak. NOTE: ** If DTC P0456 is present, use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. ** This bulletin involves reprogramming the PCM with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10248616-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10248616-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10248616"},{"nhtsa_id":10244455,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-10-30","date":"2023-09-16","document_id":"1810123","mfr_campaign":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN; ELECTRICAL SYSTEM","summary":"Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more of the following Diagnostic Trouble Codes (DTCs) has been set: ?**P0441 - EVAP Purge System Performance (for North America and Mexico markets only).** ? P0456 - EVAP System Small Leak. NOTE: ** If DTC P0456 is present, use the wiTECH Small Leak Verification Test (SLVT) to determine if a leak is present in the system. ** This bulletin involves reprogramming the PCM with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10244455-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10244455-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10244455"},{"nhtsa_id":10236933,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-05-30","date":"2023-04-15","document_id":"1804823","mfr_campaign":null,"component":"EQUIPMENT; ENGINE AND ENGINE COOLING","summary":"wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10236933-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10236933-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10236933"},{"nhtsa_id":10220071,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-09-15","date":"2019-11-01","document_id":"1808919","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING","summary":"wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10220071-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10220071-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10220071"},{"nhtsa_id":10169219,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-12-16","date":"2019-11-01","document_id":"18-089-19","mfr_campaign":null,"component":"FUEL SYSTEM, GASOLINE; ENGINE","summary":"wiTECH Small Leak Verification Test (SLVT) - P0456-EVAP SYSTEM SMALL LEAK","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10169219-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10169219-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10169219"},{"nhtsa_id":10168483,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-12-02","date":"2019-10-25","document_id":"18-076-19","mfr_campaign":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); ELECTRICAL SYSTEM","summary":"Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set: P0456 - EVAP System Small Leak.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10168483-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10168483-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10168483"}],"url":"https://open.wenmarpro.com/makes/dodge/durango/2019/bulletins?code=P0456"},"related":{"components":[],"bulletins":[],"recalls":{"may_apply":true,"recalls":[],"lookup":{"nhtsa":"https://www.nhtsa.gov/recalls","tc":"https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng","maker":null}}},"url":"https://open.wenmarpro.com/makes/dodge/durango/2019/codes/P0456","note":"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.","attribution":["Contains information licensed under the Open Government Licence – Canada."]}