{"vehicle":{"id":"2022_ram_1500","year":2022,"make":"Ram","model":"1500"},"code":"U0402","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":7,"bulletins":[{"nhtsa_id":10248622,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-01-08","date":"2023-09-23","document_id":"1800123","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 that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ?**P1524 - Oil Pressure Out Of Range - Camshaft Advance/Retard Disabled. ? P219A - Bank 1 Air-Fuel Ratio Imbalance.** ? U0402-00 Implausible Data Received from the TCM. (When U0402-00 sets in the PCM, the module will start to deny torque requests from the Transmission Control Module (TCM). The transmission will fault and go to a fixed gear limp-inreaction, and send the MIL request to PCM.) The customer may also experence the following: ? A limp mode when the DTC sets in the PCM. This bulletin involves reprogramming the PCM with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10248622-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10248622-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10248622"},{"nhtsa_id":10244461,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-10-30","date":"2023-09-23","document_id":"1800123","mfr_campaign":null,"component":"ELECTRICAL SYSTEM; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM); POWER TRAIN","summary":"Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ?**P1524 - Oil Pressure Out Of Range - Camshaft Advance/Retard Disabled. ? P219A - Bank 1 Air-Fuel Ratio Imbalance.** ? U0402-00 Implausible Data Received from the TCM. (When U0402-00 sets in the PCM, the module will start to deny torque requests from the Transmission Control Module (TCM). The transmission will fault and go to a fixed gear limp-inreaction, and send the MIL request to PCM.) The customer may also experence the following: ? A limp mode when the DTC sets in the PCM. This bulletin involves reprogramming the PCM with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10244461-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10244461-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10244461"},{"nhtsa_id":10239930,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-07-31","date":"2023-05-09","document_id":"1800123","mfr_campaign":null,"component":"ELECTRICAL SYSTEM; POWER TRAIN","summary":"Flash: Powertrain Control Module (PCM) Updates 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: ? U0402-00 - IMPLAUSIBLE DATA RECEIVED FROM TCM. When U0402-00 sets in the PCM, the module will start to deny torque requests from Transmission Control Module (TCM), the transmission will fault and go to a fixed gear limp-in reaction, and send the MIL request to PCM. The customer may also experience the following: ? A limp mode when DTC sets in the PCM. This bulletin involves reprogramming the PCM with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10239930-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10239930-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10239930"},{"nhtsa_id":10231802,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-02-13","date":"2023-01-26","document_id":"08-025-23","mfr_campaign":null,"component":"EXTERIOR LIGHTING; POWER TRAIN; ENGINE AND ENGINE COOLING","summary":"Flash: Hybrid Control Processor (HCP) 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) have been set: P1C64 - Hybrid Perf Engine Speed Below Target During Autostart. U0402 - Implausible Data Received From TCM. Customers may also comment on one or more of the following: During an Engine Stop/Start (ESS) event, the autostart fails and the AutoPark engages. Transmission is in Limp Mode. This bulletin involves updating the HCP with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10231802-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10231802-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10231802"},{"nhtsa_id":10229790,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-01-17","date":"2022-12-02","document_id":"08-093-22 REV. B","mfr_campaign":null,"component":"ENGINE AND ENGINE COOLING; POWER TRAIN; EXTERIOR LIGHTING","summary":"Flash: Hybrid Control Processor (HCP) Updates This bulletin involves updating the HCP with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more ofthe following DTCs have been set: U0402-00 - Implausible Data Received From TCM. P1C64 - Hybrid Perf - Engine Speed Below Target During Autostart. In addition, the following software enhancement is available: Engine Stop/Start (ESS) improvements - Improvements to make ESS more smooth/consistent. Customers may complain of rough or inconsistentautostarts. The customer may also describe one or more of the following: Coast down engine idle improvements (related to two-foot driving below 19kph (12 mph). During an ESS event, the autostart fails and the AutoPark engages. Transmission is in Limp Mode.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10229790-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10229790-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10229790"},{"nhtsa_id":10227987,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-12-19","date":"2022-04-05","document_id":"S2221000001","mfr_campaign":null,"component":"POWER TRAIN; ENGINE","summary":"Customer complaint may include a Mil/check engine lamp on condition. Other driveablility complaints may include, trans will not shift, stuck in gear, vehicle in limp mode, lack of power, vibration. Upon further investigation, a DTC for U0402 - Implausible Data Received From TCM may be set in the PCM.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10227987-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10227987-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10227987"},{"nhtsa_id":10214603,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-06-27","date":"2022-05-13","document_id":"08-093-22","mfr_campaign":null,"component":"POWER TRAIN; ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:SOFTWARE","summary":"Flash: Hybrid Control Processor (HCP) Updates This bulletin involves updating the HCP with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find one or more ofthe following Diagnostic trouble Codes (DTCs) have been set: P1C64 - Hybrid Perf - Engine Speed Below Target During Autostart. U0402 - Implausible Data Received From TCM. The customer may also describe one or more of the following: During a Engine Stop/Start (ESS) event, the autostart fails and the AutoParkengages. Transmission is in Limp Mode.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10214603-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10214603-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10214603"}],"url":"https://open.wenmarpro.com/makes/ram/1500/2022/bulletins?code=U0402"},"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/1500/2022/codes/U0402","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."]}