RAM

18-014-26 REV. A

2026-04-22 · NHTSA 11031678

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

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

Repeated filings are grouped only when make, bulletin number, publication date and complete summary agree. Original record numbers are retained. Older publications remain available, and an explicit later version is shown when established. Pre-1994 vehicle associations are separated from default results; an unspecified year does not mean all model years apply.