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Service bulletin 68210084A

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10148644
Published by NHTSA2018-11-19
Manufacturer's number68210084A
Manufacturer's date2015-09-26
NHTSA componentENGINE

NHTSA's summary

Engine Out NOX Sensor 1/1 If a vehicle comes in with an active has the MIL on for DTC P1C55 - NOx Sensor Intermittent Bank 1 Sensor 1, please do not repair any further or replace any parts at this time. The root cause of this DTC is currently being investigated. Cummins Engineering would like to visit a dealership to acquire information from that vehicle. Please contact Christine Donegan at (866) 799-1692 ext 1257~ If you do not receive an answer or call back within 15 minutes, proceed with normal diagnostics~ If part replacement of the Engine Out NOx Sensor (Bank 1, Sensor 1) is required for issues other than P1C55 use LOP 250809

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Trouble codes named

P1C55

Vehicles listed
CHRYSLER CHRYSLER TRUCK

Listing a model year does not mean every vehicle of it is concerned: the document says which.