{"vehicle":{"id":"2019_jeep_grand-cherokee","year":2019,"make":"Jeep","model":"Grand Cherokee"},"code":"P0441","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":3,"bulletins":[{"nhtsa_id":11020110,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-07-02","date":"2025-06-25","document_id":"18-035-25","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-11020110-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11020110-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11020110"},{"nhtsa_id":10248615,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-01-08","date":"2023-09-16","document_id":"1810023","mfr_campaign":null,"component":"ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)","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-10248615-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10248615-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10248615"},{"nhtsa_id":10244454,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-10-30","date":"2023-09-16","document_id":"1810023","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-10244454-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10244454-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10244454"}],"url":"https://open.wenmarpro.com/makes/jeep/grand-cherokee/2019/bulletins?code=P0441"},"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/jeep/grand-cherokee/2019/codes/P0441","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."]}