{"vehicle":{"id":"2023_ram_3500","year":2023,"make":"Ram","model":"3500"},"code":"P0128","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":3,"bulletins":[{"nhtsa_id":11029679,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-03-05","date":"2026-02-18","document_id":"18-024-26","mfr_campaign":null,"component":"UNKNOWN OR OTHER","summary":"Flash: Powertrain Control Module (PCM) Updates **Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0128-00 - Thermostat Rationality. ● P24A4-00 - Particulate Filter Restriction - Soot Accumulation Too High. ● P208B-00 - Reductant Pump 1 Control Performance.** Customers may experience one or more of the following: ● Lower than expected fuel economy when vehicle is lightly loaded, operating in stop and go traffic and at lower speeds. ● Long cranking / extended starting times. **Other software enhancement included with this update: ● \"Air Handling Performance Test\" is now available to help troubleshoot air handling DTCs.** This bulletin involves reprogramming the PCM with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11029679-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11029679-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11029679"},{"nhtsa_id":11022176,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-08-27","date":"2025-08-23","document_id":"18-082-25","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): ● P245D-00 - EGR Cooler Bypass Control Circuit High. ● P02E3-00 - Diesel Intake Air Flow Control Circuit High. ● P0490-00 - EGR Control Circuit High. ● P229F-00 - Aftertreatment NOX Sensor Circuit Performance - Bank 1 Sensor 2. ● P0299-00 - Turbocharger Underboost. ● P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation. ● P0128-00 - Thermostat Rationality. ● P0234-00 - Turbocharger Overboost Condition.** Customers may also comment on one or more of the following: ● **Engine speed unstable when vehicle is stationary, not in gear and running on high speed governor (max engine speed).** ● Longer crank time than normal. ● Transmission overheat conditions with a message displayed in the Instrument Panel Cluster (IPC) stating \"Transmission oil temperature is too hot\" This bulletin involves reprogramming the Engine Control Module (ECM/PCM) with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11022176-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11022176-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11022176"},{"nhtsa_id":11022174,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-08-27","date":"2025-08-23","document_id":"18-080-25","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): ● P245D-00 - EGR Cooler Bypass Control Circuit High. ● P02E3-00 - Diesel Intake Air Flow Control Circuit High. ● P0490-00 - EGR Control Circuit High. ● P229F-00 - Aftertreatment NOX Sensor Circuit Performance - Bank 1 Sensor 2. ● P0299-00 - Turbocharger Underboost. ● P242F-00 - Diesel Particulate Filter Restriction - Ash Accumulation. ● P0128-00 - Thermostat Rationality. ● P0234-00 - Turbocharger Overboost Condition.** Customers may also comment on one or more of the following: ● **Engine speed unstable when vehicle is stationary, not in gear and running on high speed governor (max engine speed).** ● Longer crank time than normal. ● Transmission overheat conditions with a message displayed in the Instrument Panel Cluster (IPC) stating \"Transmission oil temperature is too hot\" This bulletin involves reprogramming the Engine Control Module (ECM/PCM) with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11022174-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11022174-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11022174"}],"url":"https://open.wenmarpro.com/makes/ram/3500/2023/bulletins?code=P0128"},"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/3500/2023/codes/P0128","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."]}