{"nhtsa_id":11038313,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-10-07","date":"2026-10-03","document_id":"18-075-26 REV. A","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"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): ● 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.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11038313-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11038313-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11038313","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P0071","P0073","P00C6","P00FD","P0111","P013E","P013F","P014A","P014B","P0300","P0306","P0335","P0336","P05BD","P062B","P06DD","P0E7E","P1CEA","P2AF6","P2C90","U0673"],"topics":[],"vehicles":[{"make":"RAM","model":"1500","year_from":2026,"year_to":2026,"match":"exact","vehicle_ids":["2026_ram_1500"]}],"as_of":"2026-10-19","note":"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.","attribution":[]}