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Service bulletins for the 2026 Ram 1500

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

339 on file from NHTSA, as of 2026-10-19.

About P0071 on the 2026 Ram 1500: what the code means, and the bulletins and recalls about the same components.

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Only bulletins with trouble code: P0071 are shown. Show all

Bulletins, newest first
18-075-26 REV. A2026-10-07. Service bulletin. POWER TRAIN. 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): ● P0111-00 - Intake Air Temperature Sensor 1 Circuit Performance (In Active or Stored status) ● P0071-00 - Ambient Air Temperature Sensor Performance (In Active or Stored status) ● P0073-00 - Ambient Air Temperature Sensor Circuit "A" High (In Active or Stored status) ● P062B-00 - Internal Control Module Fuel Injector Control Performance ● P0E7E-00 - Coolant Bypass Valve B Control Circuit (In Active or Stored status) ● P2AF6-00 - Starter Relay 3 Stuck Off (with PCR). ● P00FD - Battery B State Of Charge Performance. ● P013F-00 - O2 Sensor 2/1 Delayed Response - Lean To Rich Bank. (In Active or Stored status) ● P014A-00 - O2 Sensor 2/2 Delayed Response - Rich to Lean Bank. (In Active or Stored status) ● P013E-00 - O2 Sensor 2/1 Delayed Response - Rich to Lean Bank. (In Active or Stored status) ● P014B-00 - O2 Sensor 2/2 Delayed Response - Lean To Rich Bank. (In Active or Stored status) ● P06DD-00 - Engine Oil Pressure Control Circuit Performance/Stuck Off.(In Active or Stored status) ● P0073-00 - Ambient Air Temperature Sensor Circuit "A" High. (In Active or Stored status) ● P0071-00 - Ambient Air Temperature Sensor Performance. (In Active or Stored status) ● P2C90-00 - Crankcase Ventilation System - Hose "A" Disconnected. (In Active or Stored status) ● P1CEA-00 - Boost Side EVAP Purge System Performance. (In Active or Stored status) ● P05BD-00 - Stop-Start Mode Switch Range/Performance. (In Active or Stored status) ● P00C6-00 - Fuel Rail Pressure Too Low - Engine Cranking. (In Active or Stored status) ● U0673-00 - Lost Communication With Ion Sense Module. (In Active or Stored status) Customers may also comment on one or more of the following: ● High Elevation misfire. Electronic Start Stop (ESS) inoperative or "Auto Stop/Start Not Ready" message displayed in the Instrument Panel Cluster (IPC). NOTE: **Normal Auto Stop/Start inhibit conditions should not be considered the cause of this concern. The condition is associated with DTC P2AF6.** ● "Door Ajar" message on when door is closed. ● BSCM MIL illumination request not setting the MIL in the PCM High oil level indicator illuminated on the IPC. **The following software enhancements are now available: ● Improvements to prevent misfire DTCs P0300-P0306 that may set if one of the following DTCs set: ○ P0335-00 - Crankshaft Position Sensor Circuit. ○ P0336-00 - Crankshaft Position Sensor Performance.** This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.
18-075-262026-07-29. Service bulletin. POWER TRAIN; ENGINE. 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): ● **P0111-00 - Intake Air Temperature Sensor 1 Circuit Performance (In Active or Stored status) ● P0071-00 - Ambient Air Temperature Sensor Performance (In Active or Stored status) ● P0073-00 - Ambient Air Temperature Sensor Circuit "A" High (In Active or Stored status) ● P062B-00 - Internal Control Module Fuel Injector Control Performance ● P0E7E-00 - Coolant Bypass Valve B Control Circuit (In Active or Stored status)** ● P2AF6-00 - Starter Relay 3 Stuck Off (with PCR). ● P00FD - Battery B State Of Charge Performance. ● P013F-00 - O2 Sensor 2/1 Delayed Response - Lean To Rich Bank. (In Active or Stored status) ● P014A-00 - O2 Sensor 2/2 Delayed Response - Rich to Lean Bank. (In Active or Stored status) ● P013E-00 - O2 Sensor 2/1 Delayed Response - Rich to Lean Bank. (In Active or Stored status) ● P014B-00 - O2 Sensor 2/2 Delayed Response - Lean To Rich Bank. (In Active or Stored status) ● P06DD-00 - Engine Oil Pressure Control Circuit Performance/Stuck Off.(In Active or Stored status) ● P0073-00 - Ambient Air Temperature Sensor Circuit "A" High. (In Active or Stored status) ● P0071-00 - Ambient Air Temperature Sensor Performance. (In Active or Stored status) ● P2C90-00 - Crankcase Ventilation System - Hose "A" Disconnected. (In Active or Stored status) ● P1CEA-00 - Boost Side EVAP Purge System Performance. (In Active or Stored status) ● P05BD-00 - Stop-Start Mode Switch Range/Performance. (In Active or Stored status) ● P00C6-00 - Fuel Rail Pressure Too Low - Engine Cranking. (In Active or Storedstatus) ● U0673-00 - Lost Communication With Ion Sense Module.(In Active or Stored status) Customers may also comment on one or more of the following: ● **High Elevation misfire. ● Electronic Start Stop (ESS) inoperative. This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.
18-059-262026-06-16. Service bulletin. POWER TRAIN. 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): ● **P2AF6-00 - Starter Relay 3 Stuck Off (with PCR). ● P00FD - Battery B State Of Charge Performance.** ● P2C90-00 - Crankcase Ventilation System - Hose "A" Disconnected (In Active or Stored status). ● P0111-00 - Intake Air Temperature Sensor 1 Circuit Performance (In Active or Stored status). ● P0071-00 - Ambient Air Temperature Sensor Performance (In Active or Stored status). ● P0073-00 - Ambient Air Temperature Sensor Circuit "A" High (In Active or Stored status). ● U0673-00 - Lost Communication With Ion Sense Module (In Active or Stored status). ● P06DD-00 - Engine Oil Pressure Control Circuit Performance/Stuck Off (In Active or Stored status). ● P1CEA-00 - Boost Side EVAP Purge System Performance (In Active or Stored status). ● P0E7E-00 - Coolant Bypass Valve B Control Circuit (In Active or Stored status). Customers may also experience **one or more** of the following: ● **MIL on start-up with no vehicle drivability impact.** ● High oil level indicator illuminated on the Instrument Panel Cluster (IPC). This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.
18-017-26 REV. A2026-06-16. Service bulletin. POWER TRAIN. 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): ● **P2AF6-00 - Starter Relay 3 Stuck Off (with PCR). ● P00FD - Battery B State Of Charge Performance.** ● P013F-00 - O2 Sensor 2/1 Delayed Response - Lean To Rich Bank. (In Active or Stored status) ● P014A-00 - O2 Sensor 2/2 Delayed Response - Rich to Lean Bank. (In Active or Stored status) ● P013E-00 - O2 Sensor 2/1 Delayed Response - Rich to Lean Bank. (In Active or Stored status) ● P014B-00 - O2 Sensor 2/2 Delayed Response - Lean To Rich Bank. (In Active or Stored status) ● P06DD-00 - Engine Oil Pressure Control Circuit Performance/Stuck Off.(In Active or Stored status) ● P0073-00 - Ambient Air Temperature Sensor Circuit "A" High. (In Active or Stored status) ● P0071-00 - Ambient Air Temperature Sensor Performance. (In Active or Stored status) ● P2C90-00 - Crankcase Ventilation System - Hose "A" Disconnected. (In Active or Stored status) ● P1CEA-00 - Boost Side EVAP Purge System Performance. (In Active or Stored status) ● P05BD-00 - Stop-Start Mode Switch Range/Performance. (In Active or Stored status) ● P00C6-00 - Fuel Rail Pressure Too Low - Engine Cranking. (In Active or Stored status) ● U0673-00 - Lost Communication With Ion Sense Module.(In Active or Stored status) Customers may also comment on the following: ● **MIL on start-up with no vehicle drivability impact.** ● Rough running engine. This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.
18-044-262026-03-25. Service bulletin. ENGINE. 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): ● **P0111-00 - Intake Air Temperature Sensor 1 Circuit Range Performance Bank 1. (In Active or Stored status) ● P0071-00 - Ambient Air Temperature Sensor Performance. (In Active or Stored status) ● P0072-00 - Ambient Air Temperature Sensor Circuit "A" Low. (In Active or Stored status) ● P0073-00 - Ambient Air Temperature Sensor Circuit "A" High. (In Active or Stored status) ● P0011-00 - Bank 1 Camshaft 1 Position Timing Over Advanced Or. (In Active or Stored status) ● P25E4-00 - B Camshaft Position - Unable To Achieve Locked Position Bank 1. (In Active or Stored status) ● P05BD-00 - Stop-Start Mode Switch Range/Performance. (In Active or Stored status) ● P0116-00 - Engine Coolant Temperature Sensor 1 Performance. (In Active or Stored status) ● P062B-00 - Internal Control Module Fuel Injector Control Performance. (In Active or Stored status) ● P0604-00 - Internal Control Module Random Access Memory Ram Error. (In Active or Stored status) ● P060C-00 - Internal Control Module Main Processor Performance. (In Active or Stored status)** ● P018B-00 - Fuel Pressure Sensor "B" Circuit Range/performance. **(In Active or Stored status)** ● P1CEA-00 - Boost Side EVAP Purge System Performance. **(In Active or Stored status)** ● P06DD-00 - Engine Oil Pressure Control Circuit Performance/Stuck Off. **(In Active or Stored status)** ● P00C6-00 - Fuel Rail Pressure Too Low - Engine Cranking. **(In Active or Stored status)** ● P0300-00 - Multiple Cylinder Misfire. **(In Active or Stored status)** Customers may also experience one or more of the following: ● **Oil Level High Warning in the Instrument Panel Cluster (IPC).** ● Fully Autonomous Parking Assist (FAPA) is not deactivated when accelerator pedal is pressed. ● Vehicle is not heating up fast enough at freezi
18-017-262026-02-12. Service bulletin. ELECTRICAL SYSTEM. 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): ● **P013F-00 - O2 Sensor 2/1 Delayed Response - Lean To Rich Bank. (In Active or Stored status) ● P014A-00 - O2 Sensor 2/2 Delayed Response - Rich to Lean Bank. (In Active or Stored status) ● P013E-00 - O2 Sensor 2/1 Delayed Response - Rich to Lean Bank. (In Active or Stored status)** ● P014B-00 - O2 Sensor 2/2 Delayed Response - Lean To Rich Bank. (In Active or Stored status) ● P06DD-00 - Engine Oil Pressure Control Circuit Performance/Stuck Off.(In Active or Stored status) ● P0073-00 - Ambient Air Temperature Sensor Circuit "A" High. (In Active or Stored status) ● P0071-00 - Ambient Air Temperature Sensor Performance. (In Active or Stored status) ● P2C90-00 - Crankcase Ventilation System - Hose "A" Disconnected. (In Active or Stored status) ● P1CEA-00 - Boost Side EVAP Purge System Performance. (In Active or Stored status) ● P05BD-00 - Stop-Start Mode Switch Range/Performance. (In Active or Stored status) ● P00C6-00 - Fuel Rail Pressure Too Low - Engine Cranking. (In Active or Stored status) ● U0673-00 - Lost Communication With Ion Sense Module.(In Active or Stored status) Customers may also comment on the following: ● Rough running engine. This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.
18-106-252025-12-17. Service bulletin. ENGINE; ELECTRICAL SYSTEM. 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): ● P2C90-00 - Crankcase Ventilation System - Hose "A" Disconnected (In Active or Stored status). ● P0111-00 - Intake Air Temperature Sensor 1 Circuit Performance (In Active or Stored status). ● P0071-00 - Ambient Air Temperature Sensor Performance (In Active or Stored status). ● P0073-00 - Ambient Air Temperature Sensor Circuit "A" High (In Active or Stored status). ● U0673-00 - Lost Communication With Ion Sense Module (In Active or Stored status). ● P06DD-00 - Engine Oil Pressure Control Circuit Performance/Stuck Off (In Active or Stored status). ● P1CEA-00 - Boost Side EVAP Purge System Performance (In Active or Stored status). ● P0E7E-00 - Coolant Bypass Valve B Control Circuit (In Active or Stored status). Customers may also experience the following: ● High oil level indicator illuminated on the Instrument Panel Cluster (IPC). This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software
9100730 Rev 12025-12-17. Service bulletin. ELECTRICAL SYSTEM. The ambient temperature sensor mounted on the mirror may read higher than expected, sensor must NOT be removed before reviewing the following cases. There are two cases: 1) DTC codes are present, proceed according to the following TSBs: 1.1) 18-031-25 (25 MY DT with DTC: P0071-00 & P0073-00) 1.2) 18-032-25 (25 MY DT with DTC: P0071-00 & P0073-00 for vehicles built on or after July 01, 2024 and before July 29, 2025) 1.3) 08-357-25 (26 MY DT with DTC: P0071-00 & P0073-00) 2) No DTC codes are present, but temperature shown in the cluster/radio is higher than expected, proceed according to SOL S2508000078. To allow the sensor to update properly, drive the vehicle at highway speeds (above 20 MPH) for several miles (15 minutes). This ensures sufficient airflow and temperature sampling for accurate readings. If the temperature still does not update, proceed with standard diagnostic procedures.
9100463REV12025-12-17. Service bulletin. ELECTRICAL SYSTEM. 2024-2025 DT with DTC P0070 OR P0073 If Mirror Ambient Temperature Sensor (AATS) isnot reading temp correctly or setting DTC P0073, P0070 - allow the sensor to updateproperly by driving the vehicle at highway speeds (above 20 MPH) for several miles (15minutes). This ensures sufficient airflow and temperature sampling for accurate readings. If the temperature still does not update, proceed with standard diagnostic procedures. 2025-2026 DT with DTC P0071 AND P0073 (vehicles built on or between 07/01/2025 -07/29/2025 - If BOTH DTCs are present, before replacing the sensor, refer to the latest TSBin Service Library for additional repair procedure(s). - If NO DTC is present, but temperatureshown in the cluster/radio is higher than expected, allow the sensor to update properly bydriving the vehicle at highway speeds (above 20 MPH) for several miles (15 minutes). Thisensures sufficient airflow and temperature sampling for accurate readings. If thetemperature still does not update, proceed with standard diagnostic procedures.
91007302025-11-26. Service bulletin. ELECTRICAL SYSTEM. The ambient temperature sensor mounted on the mirror may read higher than expected, sensor must NOT be removed before reviewing the following cases. There are two cases: 1) DTC codes are present, proceed according to the following TSBs: 1.1) 18-031-25 (25 MY DT with DTC: P0071-00 & P0073-00) 1.2) 18-032-25 (25 MY DT with DTC: P0071-00 & P0073-00 for vehicles built on or after July 01, 2024 and before July 29, 2025) 1.3) 08-357-25 (26 MY DT with DTC: P0071-00 & P0073-00) 2) No DTC codes are present, but temperature shown in the cluster/radio is higher than expected, proceed according to SOL S2508000078. To allow the sensor to update properly, drive the vehicle at highway speeds (above 20 MPH) for several miles (15 minutes). This ensures sufficient airflow and temperature sampling for accurate readings. If the temperature still does not update, proceed with standard diagnostic procedures.
08-357-252025-10-29. Service bulletin. ELECTRICAL SYSTEM. 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): ● P014B-00 - O2 Sensor 2/2 Delayed Response - Lean To Rich Bank. (In Active or Stored status) ● P06DD-00 - Engine Oil Pressure Control Circuit Performance/Stuck Off. (In Active or Stored status) ● P0073-00 - Ambient Air Temperature Sensor Circuit "A" High. (In Active or Stored status) ● P0071-00 - Ambient Air Temperature Sensor Performance. (In Active or Stored status) ● P2C90-00 - Crankcase Ventilation System - Hose "A" Disconnected. (In Active or Stored status) ● P1CEA-00 - Boost Side EVAP Purge System Performance. (In Active or Stored status) ● P05BD-00 - Stop-Start Mode Switch Range/Performance. (In Active or Stored status) ● P00C6-00 - Fuel Rail Pressure Too Low - Engine Cranking. (In Active or Stored status) ● U0673-00 - Lost Communication With Ion Sense Module. (In Active or Stored status) Customers may also comment on the following: ● Rough running engine This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.