{"vehicle":{"id":"2021_toyota_avalon","year":2021,"make":"Toyota","model":"Avalon"},"code":"P0301","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":3,"bulletins":[{"nhtsa_id":11020670,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-07-10","date":"2025-06-25","document_id":"T-SB-0010-24 Rev2","mfr_campaign":"T-SB-0010-24 Rev2","component":"ELECTRICAL SYSTEM","summary":"Some 2021 – 2022 model year Avalon, 2018 – 2024 Camry, 2019 – 2025 model year Corolla, 2022 – 2025 model year Corolla Cross, and 2019 – 2025 model year RAV4 vehicles with A25A-FKS and M20A-FKS engines may have a MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs) upon cold soak start up with engine coolant temperatures between 14°F – 41°F: •P030027 – Random/Multiple Cylinder Misfire Detected (Emission) Signal Rate of Change Above Threshold •P030000 – Random/Multiple Cylinder Misfire Detected •P030100 – Cylinder 1 Misfire Detected •P030200 – Cylinder 2 Misfire Detected •P030300 – Cylinder 3 Misfire Detected •P030400 – Cylinder 4 Misfire Detected","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11020670-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11020670-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11020670"},{"nhtsa_id":11012762,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-01-09","date":"2024-12-17","document_id":"T-SB-0010-24 Rev1","mfr_campaign":"T-SB-0010-24 Rev1","component":"STRUCTURE:BODY","summary":"Some 2021 – 2022 model year Avalon, 2018 – 2024 Camry, 2019 – 2025 model year Corolla, 2022 – 2025 model year Corolla Cross, and 2019 – 2025 model year RAV4 vehicles with A25A-FKS and M20A-FKS engines may have a MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs) upon cold soak start up with engine coolant temperatures between 14°F – 41°F: •P030027 – Random/Multiple Cylinder Misfire Detected (Emission) Signal Rate of Change Above Threshold •P030000 – Random/Multiple Cylinder Misfire Detected •P030100 – Cylinder 1 Misfire Detected •P030200 – Cylinder 2 Misfire Detected •P030300 – Cylinder 3 Misfire Detected •P030400 – Cylinder 4 Misfire Detected","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11012762-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11012762-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11012762"},{"nhtsa_id":10252262,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-04-01","date":"2024-02-21","document_id":"TSB001024","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING","summary":"TSB: Some 2021 ? 2022 model year Avalon, 2018 ? 2024 Camry, and 2019 ? 2024 RAV4 vehicles with A25A-FKS engines may have a MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs) upon cold soak start up with engine coolant temperatures between 14°F ? 41°F: ?P030027 ? Random/Multiple Cylinder Misfire Detected (Emission) Signal Rate of Change Above Threshold ?P030000 ? Random/Multiple Cylinder Misfire Detected ?P030100 ? Cylinder 1 Misfire Detected ?P030200 ? Cylinder 2 Misfire Detected ?P030300 ? Cylinder 3 Misfire Detected ?P030400 ? Cylinder 4 Misfire Detected Follow the Repair Procedure in this bulletin to address these conditions.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10252262-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10252262-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10252262"}],"url":"https://open.wenmarpro.com/makes/toyota/avalon/2021/bulletins?code=P0301"},"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/toyota/avalon/2021/codes/P0301","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."]}