{"vehicle":{"id":"2021_ram_1500","year":2021,"make":"Ram","model":"1500"},"code":"P0174","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":7,"bulletins":[{"nhtsa_id":10230261,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-01-17","date":"2021-07-17","document_id":"1400521","mfr_campaign":null,"component":"FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM","summary":"Fuel Line Blockage This bulletin involves replacing the engine fuel/EVAP forward line bundle. 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: P0174 - Fuel System 2/1 Lean. In addition, the customer may notice one or more of the following conditions:Reduced acceleration. Rough starting.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10230261-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10230261-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10230261"},{"nhtsa_id":10230132,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-01-17","date":"2021-05-22","document_id":"1805021","mfr_campaign":null,"component":"POWER TRAIN; ELECTRICAL SYSTEM; EXTERIOR LIGHTING; BACK OVER PREVENTION; FUEL SYSTEM, GASOLINE","summary":"Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P0133 - O2 Sensor 1/1 Slow Response. P0153 - O2 Sensor 2/1 Slow Response. P0171 - Fuel System 1/1 Lean. P0174 - Fuel System 2/1 Lean. P0300 - Multiple Cylinder Misfire. P0301 - Cylinder 1 Misfire. P0302 - Cylinder 2 Misfire. P0303 - Cylinder 3 Misfire. P0304 - Cylinder 4 Misfire. P0305 - Cylinder 5 Misfire. P0306 - Cylinder 6 Misfire. P0307 - Cylinder 7 Misfire. P0308 - Cylinder 8 Misfire. B2286 - Calibration Not Learned / Lost Calibration. The customer may also experience one or more of the following:Hesitation feel during a pedal tip in, while engine is warming up below -1 °C (30 °F) ambient temp. During a 2 - 3 transmission upshift, the engine is hitting rev limit. ?Service Suspension? message in Instrument Panel Cluster (IPC) on start up.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10230132-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10230132-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10230132"},{"nhtsa_id":10227742,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-12-12","date":"2022-10-06","document_id":"1814522","mfr_campaign":null,"component":"POWER TRAIN; FUEL SYSTEM, GASOLINE; ELECTRICAL SYSTEM","summary":"Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the Powertrain Control Module (PCM) with thelatest available software. The customer may experience one or more of the following: Generic Scan Tool shows incorrect PCM Calibration Part Number and Emissions type:OBDI not OBDII(North America Only). Hesitation feel during a pedal tip in, while engine is warming up below -1 °C (30 °F) ambient temp. During a 2 - 3 transmission upshift, the engine is hitting rev limit(DFS Sales Code Only). ?Service Suspension? message in Instrument Panel Cluster (IPC) on start up. Customers may also experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigationthe technician may find that the one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P0133 - O2 Sensor 1/1 Slow Response. P0153 - O2 Sensor 2/1 Slow Response. P0171 - Fuel System 1/1 Lean. P0174 - Fuel System 2/1 Lean. P0300 - Multiple Cylinder Misfire. P0301 - Cylinder 1 Misfire. P0302 - Cylinder 2 Misfire. P0303 - Cylinder 3 Misfire. P0304 - Cylinder 4 Misfire. P0305 - Cylinder 5 Misfire. P0306 - Cylinder 6 Misfire. P0307 - Cylinder 7 Misfire. P0308 - Cylinder 8 Misfire. B2286 - Calibration Not Learned / Lost Calibration.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10227742-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2022/MC-10227742-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10227742"},{"nhtsa_id":10223498,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-10-17","date":"2021-05-22","document_id":"1805021","mfr_campaign":null,"component":"ELECTRICAL SYSTEM; POWER TRAIN; ELECTRICAL SYSTEM:SOFTWARE","summary":"Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P0133 - O2 Sensor 1/1 Slow Response. P0153 - O2 Sensor 2/1 Slow Response. P0171 - Fuel System 1/1 Lean. P0174 - Fuel System 2/1 Lean. P0300 - Multiple Cylinder Misfire. P0301 - Cylinder 1 Misfire. P0302 - Cylinder 2 Misfire. P0303 - Cylinder 3 Misfire. P0304 - Cylinder 4 Misfire. P0305 - Cylinder 5 Misfire. P0306 - Cylinder 6 Misfire. P0307 - Cylinder 7 Misfire. P0308 - Cylinder 8 Misfire. B2286 - Calibration Not Learned / Lost Calibration. The customer may also experience one or more of the following:Hesitation feel during a pedal tip in, while engine is warming up below -1 °C (30 °F) ambient temp. During a 2 - 3 transmission upshift, the engine is hitting rev limit. ?Service Suspension? message in Instrument Panel Cluster (IPC) on start up.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10223498-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10223498-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10223498"},{"nhtsa_id":10223360,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-10-17","date":"2021-05-22","document_id":"1805021","mfr_campaign":null,"component":"POWER TRAIN; ELECTRICAL SYSTEM","summary":"Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P0133 - O2 Sensor 1/1 Slow Response. P0153 - O2 Sensor 2/1 Slow Response. P0171 - Fuel System 1/1 Lean. P0174 - Fuel System 2/1 Lean. P0300 - Multiple Cylinder Misfire. P0301 - Cylinder 1 Misfire. P0302 - Cylinder 2 Misfire. P0303 - Cylinder 3 Misfire. P0304 - Cylinder 4 Misfire. P0305 - Cylinder 5 Misfire. P0306 - Cylinder 6 Misfire. P0307 - Cylinder 7 Misfire. P0308 - Cylinder 8 Misfire. B2286 - Calibration Not Learned / Lost Calibration. The customer may also experience one or more of the following:Hesitation feel during a pedal tip in, while engine is warming up below -1 °C (30 °F) ambient temp. During a 2 - 3 transmission upshift, the engine is hitting rev limit. ?Service Suspension? message in Instrument Panel Cluster (IPC) on start up.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10223360-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10223360-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10223360"},{"nhtsa_id":10221675,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2022-09-26","date":"2021-07-17","document_id":"1400521","mfr_campaign":null,"component":"FUEL SYSTEM, GASOLINE; EXTERIOR LIGHTING","summary":"Fuel Line Blockage This bulletin involves replacing the engine fuel/EVAP forward line bundle. 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: P0174 - Fuel System 2/1 Lean. In addition, the customer may notice one or more of the following conditions:Reduced acceleration. Rough starting.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10221675-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10221675-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10221675"},{"nhtsa_id":10198454,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-06-28","date":"2021-05-22","document_id":"18-050-21","mfr_campaign":null,"component":"ELECTRICAL SYSTEM; POWER TRAIN","summary":"Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the one or more of the following Diagnostic Trouble Codes (DTCs) have been set: P0133 - O2 Sensor 1/1 Slow Response. P0153 - O2 Sensor 2/1 Slow Response. P0171 - Fuel System 1/1 Lean. P0174 - Fuel System 2/1 Lean. P0300 - Multiple Cylinder Misfire. P0301 - Cylinder 1 Misfire. P0302 - Cylinder 2 Misfire. P0303 - Cylinder 3 Misfire. P0304 - Cylinder 4 Misfire. P0305 - Cylinder 5 Misfire. P0306 - Cylinder 6 Misfire. P0307 - Cylinder 7 Misfire. P0308 - Cylinder 8 Misfire. B2286 - Calibration Not Learned / Lost Calibration. The customer may also experience one or more of the following:Hesitation feel during a pedal tip in, while engine is warming up below -1 °C (30 °F) ambient temp. During a 2 - 3 transmission upshift, the engine is hitting rev limit. ?Service Suspension? message in Instrument Panel Cluster (IPC) on start up.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10198454-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10198454-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10198454"}],"url":"https://open.wenmarpro.com/makes/ram/1500/2021/bulletins?code=P0174"},"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/1500/2021/codes/P0174","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."]}