{"vehicle":{"id":"2023_ram_2500","year":2023,"make":"Ram","model":"2500"},"code":"P0402","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":3,"bulletins":[{"nhtsa_id":11035162,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-07-23","date":"2026-07-17","document_id":"08-272-26 REV. A","mfr_campaign":null,"component":"ELECTRICAL SYSTEM","summary":"Air Handling Performance Test (APT) Availability In wiTECH Technicians may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0234-00 - Turbocharger Overboost Condition. ● P0299-00 - Turbocharger Underboost. ● P0101-00 - Mass Air Flow Sensor \"A\" Circuit Performance. ● P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1. ● P24A4-00 - Particulate Filter Restriction - Soot Accumulation Too High. ● P2262-00 - Turbocharger Boost Pressure Not Detected - Mechanical. ● P0471-00 - Exhaust Pressure Sensor 1 Performance. ● P1451-00 - Diesel Particulate Filter System Performance. ● P2457-00 - Exhaust Gas Recirculation Cooling System Performance. ● P2263-00 - Turbo Boost System Performance. ● P2459-00 - Diesel Particulate Filter Regeneration Too Frequent. ● P24A2-00 - Diesel Particulate Filter Regeneration Incomplete - Bank 1. ● P0401-00 - EGR System Performance. ● P0402-00 - EGR Flow Excessive Detected.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11035162-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11035162-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11035162"},{"nhtsa_id":11035047,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-07-18","date":"2026-07-11","document_id":"08-272-26","mfr_campaign":null,"component":"ELECTRICAL SYSTEM","summary":"Air Handling Performance Test (APT) Availability In wiTECH Technicians may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0234-00 - Turbocharger Overboost Condition. ● P0299-00 - Turbocharger Underboost. ● P0101-00 - Mass Air Flow Sensor \"A\" Circuit Performance. ● P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1. ● P24A4-00 - Particulate Filter Restriction - Soot Accumulation Too High. ● P2262-00 - Turbocharger Boost Pressure Not Detected - Mechanical. ● P0471-00 - Exhaust Pressure Sensor 1 Performance. ● P1451-00 - Diesel Particulate Filter System Performance. ● P2457-00 - Exhaust Gas Recirculation Cooling System Performance. ● P2263-00 - Turbo Boost System Performance. ● P2459-00 - Diesel Particulate Filter Regeneration Too Frequent. ● P24A2-00 - Diesel Particulate Filter Regeneration Incomplete - Bank 1. ● P0401-00 - EGR System Performance. ● P0402-00 - EGR Flow Excessive Detected.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11035047-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11035047-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11035047"},{"nhtsa_id":11024553,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-10-29","date":"2025-10-24","document_id":"08-350-25","mfr_campaign":null,"component":"ENGINE; ELECTRICAL SYSTEM","summary":"Air Handling Performance Test (APT) Availability In wiTECH Technicians may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0234-00 - Turbocharger Overboost Condition. ● P0299-00 - Turbocharger Underboost. ● P0101-00 - Mass Air Flow Sensor \"A\" Circuit Performance. ● P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1. ● P24A4-00 - Particulate Filter Restriction - Soot Accumulation Too High. ● P2262-00 - Turbocharger Boost Pressure Not Detected - Mechanical. ● P0471-00 - Exhaust Pressure Sensor 1 Performance. ● P1451-00 - Diesel Particulate Filter System Performance. ● P2457-00 - Exhaust Gas Recirculation Cooling System Performance. ● P2263-00 - Turbo Boost System Performance. ● P2459-00 - Diesel Particulate Filter Regeneration Too Frequent. ● P24A2-00 - Diesel Particulate Filter Regeneration Incomplete - Bank 1. ● P0401-00 - EGR System Performance. ● P0402-00 - EGR Flow Excessive Detected","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11024553-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11024553-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11024553"}],"url":"https://open.wenmarpro.com/makes/ram/2500/2023/bulletins?code=P0402"},"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/ram/2500/2023/codes/P0402","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."]}