{"vehicle":{"id":"2025_ram_3500","year":2025,"make":"Ram","model":"3500"},"code":"P242B","generic":true,"description":null,"bulletins":{"as_of":"2026-10-19","count":7,"bulletins":[{"nhtsa_id":11037476,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-09-23","date":"2026-09-15","document_id":"9100922","mfr_campaign":null,"component":"ENGINE; ELECTRICAL SYSTEM","summary":"SENSOR Exhaust Temperature If this sensor is being replaced due to an early-life P242B pending fault code, clear the fault code and perform the Powertrain Verification Test. Only replace the sensor if P242B returns as an active fault code.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11037476-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11037476-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11037476"},{"nhtsa_id":11031678,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-04-29","date":"2026-04-22","document_id":"18-014-26 REV. A","mfr_campaign":null,"component":"ENGINE","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): ● **P0088-00 - Fuel Rail Pressure Too High - Bank 1.** ● P20CF-00 - Exhaust After treatment Fuel Injector \"A\" Stuck Open. ● P20DB-00 - Exhaust After treatment Fuel Supply Control Stuck Open. ● U0109-00 - Lost Communication With Fuel Pump Control Module. ● P1451-00 - Diesel Particulate Filter System Performance. ● P2463-00 - Diesel Particulate Filter Restriction - Soot Accumulation Bank 1. ● P2459-00 - Diesel Particulate Filter Regeneration Too Frequent. ● P0087-00 - Fuel Rail Pressure Too Low. ● P2540-00 - Low Pressure Fuel System Sensor Circuit Range/performance. ● P2543-00 - Low Pressure Fuel System Sensor Circuit Intermittent. ● P214D-00 - SCR NOX Catalyst Outlet Temperature Too High During Particulate Filter Regeneration. ● P242B-00 - Exhaust Gas Temperature Sensor Circuit Performance - Bank 1 Sensor 3. ● P24DA-00 - Particulate Matter Sensor Exhaust Sample Error Bank 1. ● P20EE-00 - SCR Nox Catalyst Efficiency Below Threshold - Bank 1 Catalyst 1. ● P226C-00 - Turbocharger Boost Control \"A\" Slow Response. ● P2281-00 - Air Leak Between MAF And Throttle Body. ● P229F-00 - NOX Sensor Circuit Range/performance - Bank 1. ● P0100-00 - Mass Or Volume Air Flow Sensor \"A\" Circuit. ● P203F-00 - Reductant Level Too Low. ● P0423-00 - Heated Catalyst Efficiency Below Threshold Bank 1. ● P0263-00 - Cylinder 1 Contribution-Balance. ● P0266-00 - Cylinder 2 Contribution-Balance. ● P0269-00 - Cylinder 3 Contribution-Balance. ● P0272-00 - Cylinder 4 Contribution-Balance. ● P0275-00 - Cylinder 5 Contribution-Balance. ● P0278-00 - Cylinder 6 Contribution/Balance. ● P026B-00 - Injection Timing Performance. ● P020A-00 - Cylinder 1 Injection Timing. ● P020B-00 - Cylinder 2 Injection Timing. ● P020C-00 - Cylinder 3 Injection Timing. ● P020D-00 - Cylinder 4 Injection Timing. ● P020E-00 - Cylinder 5 Injection Timing. ● P020F-00 - Cylinder 6 Injection Timing. ● P06B9-00 - Cylinder 1 Glow Plug Circuit Performance. ● P06BA-00 - Cylinder 2 Glow Plug Circuit Performance. ● P06BB-00 - Cylinder 3 Glow Plug Circuit Performance. ● P06BC-00 - Cylinder 4 Glow Plug Circuit Performance. ● P06BD-00 - Cylinder 5 Glow Plug Circuit Performance. ● P06BE-00 - Cylinder 6 Glow Plug Circuit Performance. Customers may also comment on one or more of the following: ● Long engine crank times, particularly after fuel filter change. ● Inverter drops out when shifting from P to D gears. ● Diesel Exhaust Fluid (DEF) level gauge slow to update after a refill. ● Poor cold start performance. ● Cruise control drops out/cancels on its own. ● Engine stumble, runs rough, or a slight lack of power. The following software enhancements are also available: ● Reduce the occurrence of false faults Diagnostic Trouble Codes (DTCs) P0300-00, **P0088-00** and P0315-00. ● Improved troubleshooting and repair accuracy for air handling components through APT test in wiTECH. ● DTC P1451-00 re-tune to reduce false faults. ● Improvements to allow DTC P2509-00 faults to be cleared with wiTECH. ● Adaptive Cruise Control (ACC) software fix to prevent cruise control dropouts. ● Engine stumble fix for improved drivability. ● Engine stall detection allowing DTC P032F-00 to clear after a power cycle. ● Allow multiple PROXI rewrites. ● Enable cold re-prime (DTC P208B-00 improvement) This bulletin involves inspecting and possibly reprogramming the Engine Control Module (ECM/PCM) with the latest available software","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031678-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031678-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11031678"},{"nhtsa_id":11031238,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-04-10","date":"2026-03-31","document_id":"S2625000004","mfr_campaign":null,"component":"ELECTRICAL SYSTEM","summary":"Active/Pending Diagnostic Trouble Code (DTC) P24A0, P2482, P2481, P0420, P2470, P2471, P2472, P242D, P242B, P244D, P1484 And/or P214D setting In The Powertrain Control Module (PCM)","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031238-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031238-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11031238"},{"nhtsa_id":11031237,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-04-10","date":"2026-03-31","document_id":"S2625000003","mfr_campaign":null,"component":"ELECTRICAL SYSTEM","summary":"Active/Pending Diagnostic Trouble Code (DTC) P24A0, P2482, P2481, P0420, P2470, P2471, P2472, P242D, P242B, P244D, P1484, P106D, P1060 And/or P354B Setting In The Powertrain Control Module (PCM)","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031237-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11031237-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11031237"},{"nhtsa_id":11028765,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-02-12","date":"2026-02-03","document_id":"18-014-26","mfr_campaign":null,"component":"ELECTRICAL SYSTEM; ENGINE","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): ● **P20CF - 00 Exhaust After treatment Fuel Injector \"A\" Stuck Open. ● P20DB - 00 Exhaust After treatment Fuel Supply Control Stuck Open. ● U0109 - 00 Lost Communication With Fuel Pump Control Module. ● P1451 - 00 Diesel Particulate Filter System Performance. ● P2463 - 00 Diesel Particulate Filter Restriction - Soot Accumulation Bank 1. ● P2459 - 00 Diesel Particulate Filter Regeneration Too Frequent.** ● P0087-00 - Fuel Rail Pressure Too Low. ● P2540-00 - Low Pressure Fuel System Sensor Circuit Range/performance. ● P2543-00 - Low Pressure Fuel System Sensor Circuit Intermittent. ● P214D-00 - SCR NOX Catalyst Outlet Temperature Too High During Particulate Filter Regeneration. ● P242B-00 - Exhaust Gas Temperature Sensor Circuit Performance - Bank 1 Sensor 3. ● P24DA-00 - Particulate Matter Sensor Exhaust Sample Error Bank 1. ● P20EE-00 - SCR Nox Catalyst Efficiency Below Threshold - Bank 1 Catalyst 1. ● P226C-00 - Turbocharger Boost Control \"A\" Slow Response. ● P2281-00 - Air Leak Between MAF And Throttle Body. ● P229F-00 - NOX Sensor Circuit Range/performance - Bank 1. ● P0100-00 - Mass Or Volume Air Flow Sensor \"A\" Circuit. ● P203F-00 - Reductant Level Too Low. ● P0423-00 - Heated Catalyst Efficiency Below Threshold Bank 1. ● P0263-00 - Cylinder 1 Contribution-Balance. ● P0266-00 - Cylinder 2 Contribution-Balance. ● P0269-00 - Cylinder 3 Contribution-Balance. ● P0272-00 - Cylinder 4 Contribution-Balance. ● P0275-00 - Cylinder 5 Contribution-Balance. ● P0278-00 - Cylinder 6 Contribution/Balance. ● P026B-00 - Injection Timing Performance. ● P020A-00 - Cylinder 1 Injection Timing. ● P020B-00 - Cylinder 2 Injection Timing. ● P020C-00 - Cylinder 3 Injection Timing. ● P020D-00 - Cylinder 4 Injection Timing. B18 FSAR-TSB-6872 -2- ● P020E-00 - Cylinder","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028765-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11028765-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11028765"},{"nhtsa_id":11024298,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-10-15","date":"2025-10-08","document_id":"18-021-25 REV. B","mfr_campaign":null,"component":"UNKNOWN OR OTHER","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): ● P0087-00 - Fuel Rail Pressure Too Low. ● P2540-00 - Low Pressure Fuel System Sensor Circuit Range/performance. ● P2543-00 - Low Pressure Fuel System Sensor Circuit Intermittent. ● P214D-00 - SCR NOX Catalyst Outlet Temperature Too High During Particulate Filter Regeneration. ● P242B-00 - Exhaust Gas Temperature Sensor Circuit Performance - Bank 1 Sensor 3. ● P24DA-00 - Particulate Matter Sensor Exhaust Sample Error Bank 1. ● P20EE-00 - SCR Nox Catalyst Efficiency Below Threshold - Bank 1 Catalyst 1. ● P226C-00 - Turbocharger Boost Control \"A\" Slow Response. ● P2281-00 - Air Leak Between MAF And Throttle Body. ● P229F-00 - NOX Sensor Circuit Range/performance - Bank 1. ● P0100-00 - Mass Or Volume Air Flow Sensor \"A\" Circuit. ● P203F-00 - Reductant Level Too Low. ● P0423-00 - Heated Catalyst Efficiency Below Threshold Bank 1. ● P0263-00 - Cylinder 1 Contribution-Balance. ● P0266-00 - Cylinder 2 Contribution-Balance. ● P0269-00 - Cylinder 3 Contribution-Balance. ● P0272-00 - Cylinder 4 Contribution-Balance. ● P0275-00 - Cylinder 5 Contribution-Balance. ● P0278-00 - Cylinder 6 Contribution/Balance. ● P026B-00 - Injection Timing Performance. ● P020A-00 - Cylinder 1 Injection Timing. ● P020B-00 - Cylinder 2 Injection Timing. ● P020C-00 - Cylinder 3 Injection Timing. ● P020D-00 - Cylinder 4 Injection Timing. ● P020E-00 - Cylinder 5 Injection Timing. ● P020F-00 - Cylinder 6 Injection Timing. ● P06B9-00 - Cylinder 1 Glow Plug Circuit Performance. ● P06BA-00 - Cylinder 2 Glow Plug Circuit Performance. ● P06BB-00 - Cylinder 3 Glow Plug Circuit Performance. ● P06BC-00 - Cylinder 4 Glow Plug Circuit Performance. ● P06BD-00 - Cylinder 5 Glow Plug Circuit Performance. ● P06BE-00 - Cylinder 6 Glow Plug Circuit Performance. Customers may also comment on one or more of the following: ● **Inverter drops out when shifting from P to D gears. ● Diesel Exhaust Fluid (DEF) level gauge slow to update after a refill. ● Poor cold start performance.** ● Cruise control drops out/cancels on its own. ● Engine stumble, runs rough, or a slight lack of power. The following software enhancements are also available: ● **Improved troubleshooting and repair accuracy for air handling components through APT test in WiTECH. ** ● Reduce the occurrence of false faults Diagnostic Trouble Codes (DTCs) P0300-00 and P0315-00. ● DTC P1451-00 re-tune to reduce false faults. ● Improvements to allow DTC P2509-00 faults to be cleared with wiTECH. ● Adaptive Cruise Control (ACC) software fix to prevent cruise control dropouts. ● Engine stumble fix for improved drivability. ● Engine stall detection allowing DTC P032F-00 to clear after a power cycle. ● Allow multiple PROXI rewrites. ● Enable cold re-prime (DTC P208B-00 improvement). This bulletin involves inspecting and possibly reprogramming the Engine Control Module (ECM/PCM) with the latest available software","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11024298-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11024298-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11024298"},{"nhtsa_id":11023088,"type":"over_the_air","type_name":"Over-the-air update","date_added":"2025-09-10","date":"2025-09-05","document_id":"OTHERDOC_147","mfr_campaign":null,"component":"ELECTRICAL SYSTEM","summary":"Powertrain Contol Module Over The Air Update to V2B (Diesel Only) Software Version (FOTA) 2025 - 2026 (DJ) RAM 2500 Pickup 2025 - 2026 (D2) RAM 3500 Pickup 2025 - 2026 (DD) RAM 3500 Cab Chassis 2025 - 2026 (DF) RAM 3500 10K Lb. Cab Chassis2025 - 2026 (DP) RAM 4500/5500 Cab Chassis Customers may experience one or more of the following: - Power Inverter (110V connection) drops out when shifting from P to D - DEF (Diesel Exhaust Fluid) level gauge inaccuracy - Poor cold start performance - Instrument Panel Cluste MIL (Malfunction Indicator Light) ON; Possible P-codes: P0087/P2540/P2543 Fuel Pressure P214D/P242B SCR Temperature P24DA PM Sensor P20EE SCR Efficiency P226C/P2281 Mass Charge Flow P229F System Outlet NOx Sensor P0100 MAF Sensor P203F DEF Level P0423 DOC Efficiency","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11023088-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11023088-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11023088"}],"url":"https://open.wenmarpro.com/makes/ram/3500/2025/bulletins?code=P242B"},"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/3500/2025/codes/P242B","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."]}