18-025-26 REV. A

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.
• P208B-00 - Reductant Pump 1 Control Performance.**
• P2540-00 - Low Pressure Fuel System Sensor Circuit Range/Performance.
• P0506-00 - Idle Control System RPM - Lower Than Expected.
• P20CF-00 - Exhaust Aftertreatment Fuel Injector "A" Stuck Open.
• P20DB-00 - Exhaust Aftertreatment Fuel Supply Control Stuck Open.
• P040B-00 - EGR Temperature Sensor 1 Circuit Performance.
• 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.
• P1191-00-Inlet Air Temperature Sensor Rational/Performance.
• P242F-00-Diesel Particulate Filter Restriction - Ash Accumulation.
• P229F-00 - NOX Sensor Circuit Range/Performance - Bank 1.
• P2281-00 - Air Leak Between MAF And Throttle Body.
• 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 - 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.
• 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.
• P020A-00 - Cylinder 1 Injection Timing.
• 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. Customers may experience one or more of the following:
• **An eventual 8 kph (5 mph) vehicle speed derate if the issue does not selfheal.**
• Instrument Panel Cluster (IPC) related messages: ○ Desoot Required. ○ Soot Filter Nearly Full. ○ Exhaust Filter Full Power Reduced See Dealer.
• Long engine crank times, particularly after fuel filter change.
• Inverter drops out when shifting from park to drive.
• Diesel Exhaust Fluid level gauge inaccuracy.
• Poor cold start performance. This bulletin involves inspecting and possibly reprogramming the PCM with the latest available software.