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Service bulletins for the 2015 Ram 4500

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

399 on file from NHTSA, as of 2026-10-19.

About P229F on the 2015 Ram 4500: what the code means, and the bulletins and recalls about the same components.

By type

By component

By trouble code

Only bulletins with trouble code: P229F are shown. Show all

Bulletins, newest first
68085740A$2022-08-08. Service bulletin. EQUIPMENT. Part Description: Engine Out NOx Sensor 1/1, System Out NOx Sensor 1/2 Issue Description: If you receive a DJ/D2 with a MIL illumination and DTC P229F, please do not replace any parts at this time. Cummins Engineering is currently investigating the root cause of the concern and is requesting to visit a dealership with this DTC to gather valuable information. Please contact Christine Donegan at (866) 799-1692 ext 1257~ If causal part replacement is the System Out NOx sensor (Bank 1, Sensor 2) PNs 68085740AA, or 68197109AA, please file claim under LOP 250810. If for the Engine Out NOx Sensor (Bank 1, Sensor 1) use LOP 250809.
68085740A$2022-07-25. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING:ENGINE. Part Description: Engine Out NOx Sensor 1/1, System Out NOx Sensor 1/2 Issue Description: If you receive a DJ/D2 with a MIL illumination and DTC P229F, please do not replace any parts at this time. Cummins Engineering is currently investigating the root cause of the concern and is requesting to visit a dealership with this DTC to gather valuable information. Please contact Christine Donegan at (866) 799-1692 ext 1257~ If causal part replacement is the System Out NOx sensor (Bank 1, Sensor 2) PNs 68085740AA, or 68197109AA, please file claim under LOP 250810. If for the Engine Out NOx Sensor (Bank 1, Sensor 1) use LOP 250809.
68085740A2018-12-17. Service bulletin. ENGINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Part Description: Engine Out NOx Sensor 1/1, System Out NOx Sensor 1/2 Issue Description: If you receive a DJ/D2 with a MIL illumination and DTC P229F, please do not replace any parts at this time. Cummins Engineering is currently investigating the root cause of the concern and is requesting to visit a dealership with this DTC to gather valuable information. Please contact Christine Donegan at (866) 799-1692 ext 1257~ If causal part replacement is the System Out NOx sensor (Bank 1, Sensor 2) PNs 68085740AA, or 68197109AA, please file claim under LOP 250810. If for the Engine Out NOx Sensor (Bank 1, Sensor 1) use LOP 250809.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.