{"vehicle":{"id":"2023_ram_1500","year":2023,"make":"Ram","model":"1500"},"code":"P0306","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":4,"bulletins":[{"nhtsa_id":11028769,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-02-12","date":"2026-02-04","document_id":"18-016-26","mfr_campaign":null,"component":"ELECTRICAL SYSTEM; ENGINE","summary":"Flash: Powertrain Control Module (PCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0300-00 - Multiple Cylinder Misfire - in Active or Stored status set during cold start catalyst heating. ● P0301-00 - Cylinder 1 Misfire - in Active or Stored status set during cold start catalyst heating. ● P0302-00 - Cylinder 2 Misfire - in Active or Stored status set during cold start catalyst heating. ● P0303-00 - Cylinder 3 Misfire - in Active or Stored status set during cold start catalyst heating. ● P0304-00 - Cylinder 4 Misfire - in Active or Stored status set during cold start catalyst heating. ● P0305-00 - Cylinder 5 Misfire - in Active or Stored status set during cold start catalyst heating. ● P0306-00 - Cylinder 6 Misfire - in Active or Stored status set during cold start catalyst heating. Customers may comment on one or more of the following: ● Vehicle has a rough idle. ● Engine has a miss. ● Noisy valvetrain. This bulletin involves reprogramming the PCM with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028769-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028769-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11028769"},{"nhtsa_id":11018482,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-05-20","date":"2025-05-18","document_id":"09-011-25","mfr_campaign":null,"component":"ENGINE","summary":"\"Misfire Diagnostic Trouble Codes (DTCs), Rough Idle, Valvetrain Noise Customers may experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle may exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs): ● P0301 - Cylinder 1 Misfire. ● P0302 - Cylinder 2 Misfire. ● P0303 - Cylinder 3 Misfire. ● P0304 - Cylinder 4 Misfire. ● P0305 - Cylinder 5 Misfire. ● P0306 - Cylinder 6 Misfire. Customers may comment on one or more of the following: ● Rough idle. ● Valvetrain noise. \"","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11018482-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11018482-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11018482"},{"nhtsa_id":11013168,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-01-28","date":"2025-01-25","document_id":"18-002-25","mfr_campaign":null,"component":"POWER TRAIN","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): ● **P0300 - Multiple Cylinder Misfire. ● P0301 - Cylinder 1 Misfire. ● P0304 - Cylinder 4 Misfire. ● P0306 - Cylinder 6 Misfire. ● P0307 - Cylinder 7 Misfire. ● P3400 - Cylinder Deactivation System - Bank 1. ● P3497 - Cylinder Deactivation System - Bank 2. ● P3401 - Cylinder 1 Deactivation Control Circuit. ● P3425 - Cylinder 4 Deactivation Control Circuit. ● P3441 - Cylinder 6 Deactivation Control Circuit. ● P3449 - Cylinder 7 Deactivation Control Circuit. ● P1411 - Cylinder 1 Reactivation Control Performance. ● P1414 - Cylinder 4 Reactivation Control Performance. ● P1416 - Cylinder 6 Reactivation Control Performance. ● P1417 - Cylinder 7 Reactivation Control Performance.** ● P2097 - Downstream Fuel Trim System 1 Rich. ● P219A - Bank 1 Air-Fuel Ratio Imbalance. ● P1524 - Oil Pressure Out Of Range - Camshaft Advance/Retard Disabled. **Customers may experience the following: ● Noticeable rough idle and/or misfire during engine warm up.** This bulletin involves reprogramming the PCM with the latest available software. \"","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11013168-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11013168-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11013168"},{"nhtsa_id":10251871,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-03-18","date":"2024-01-25","document_id":"1800624","mfr_campaign":null,"component":"EXTERIOR LIGHTING; 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 one or more of the following Diagnostic Trouble Codes (DTCs) have been set: ? 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. Customers may also experience the following: ? An engine misfire This bulletin involves reprogramming the PCM with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10251871-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10251871-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10251871"}],"url":"https://open.wenmarpro.com/makes/ram/1500/2023/bulletins?code=P0306"},"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/1500/2023/codes/P0306","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."]}