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18-101-25

Manufacturer communications

Publication date
2025-11-18
Received by NHTSA
2025-11-26
NHTSA record numbers
11025715

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):
• 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:
• Inverter drops out when shifting from park to drive.
• Diesel Exhaust Fluid level gauge inaccuracy This bulletin involves reprogramming the PCM with the latest available software.

NHTSA manufacturer communications ↗

Reported code forms

Manufacturer wording

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MakeModelModel year
Ram25002026

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