18-020-25 REV. B

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):**
• **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.
• P0072 - 00 Ambient Air Temperature Sensor Circuit "A" Low.
• 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.
• 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.
• 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.
• P24DA - 00 Particulate Matter Sensor Exhaust Sample Error Bank 1.
• P214D - 00 SCR NOX Catalyst Outlet Temperature Too High During Particulate Filter Regeneration.
• P242B - 00 Exhaust Gas Temperature Sensor Circuit High - Bank 1 Sensor 3.** Customers may comment on one or more of the following:
• **Poor cold start performance.
• DEF level gauge slow to update after refill.
• Inverter drops out when shifting from Park to Drive.**
• Check engine light illuminated.
• 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 available in WiTECH.**
• Reduce the occurrence of false faults Diagnostic Trouble Codes (DTCs) P0300 and P0315.
• DTC P1451 re-tune to reduce false faults.
• Improvements to allow DTC P2509 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 to clear after a power cycle.
• Allow multiple PROXI rewrites.
• Enable cold re-prime (DTC P208B improvement). This bulletin involves inspecting and possibly reprogramming the Engine Control Module (ECM/PCM) with the latest available software