Systems and methods for compensating nox sensor measurements to meet sufficiency requirements

A method for diagnosing an exhaust aftertreatment system and mitigating the effects of a potential fault in the exhaust aftertreatment system, the method comprising:

• receiving, by a controller, data indicative of an amount of at least one of a gain or an offset affecting a sensor in an aftertreatment system;
• determining, by the controller, a compensation value based on the amount of the at least one of the gain or the offset;
• receiving, by the controller, data indicative of an amount of an exhaust gas constituent in the aftertreatment system;
• applying, by the controller, the determined compensation value to the data indicative of the amount of the exhaust gas constituent in the aftertreatment system to create compensated data;
• and
• initiating, by the controller, an action based on the compensated data.

A system for diagnosing an exhaust aftertreatment system and mitigating the effects of a potential fault in the exhaust aftertreatment system, the system comprising:

• a selective catalytic reduction (SCR) system;
• a sensor structured to provide exhaust gas constituent information regarding exhaust gas;
• and
• a controller configured to:
• receive the exhaust gas constituent information from the sensor;
• determine compensated information by applying at least one of a compensation offset value or a compensation gain value to the exhaust gas constituent information;
• and
• initiate an action based on the compensated information.