68210084A

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