Detecting sensor malfunction or tampering based on reductant consumption

A system for determining when to initiate a quality check of DEF used in an aftertreatment system, the system comprising:

• a memory storing instructions;
• and
• a processor executing the instructions to perform a process including:
• receiving dosing data associated with an amount of DEF supplied to the aftertreatment system;
• receiving tank level data from a level sensor in a DEF tank;
• comparing the dosing data with the tank level data;
• based on the comparison:
• initiating a quality check;
• and
• causing a presentation of an indication that the quality check is being initiated on a display;
• receiving an indication the quality check is running;
• and
• upon receiving an indication that the quality check is running, refraining from comparing the dosing data with the tank level data.

A non-transitory computer-readable medium storing instructions that, when executed by a processor, cause the processor to perform a method for detecting level sensor malfunction or tampering based on reductant consumption in an aftertreatment system, the method comprising:

• receiving dosing data associated with an amount of DEF supplied to the aftertreatment system;
• receiving tank level data from a level sensor in a DEF tank;
• determining whether the amount of DEF supplied to the aftertreatment system exceeds an initial pre-determined threshold;
• upon determining that the amount of DEF supplied to the aftertreatment system does not exceed the initial pre-determined threshold, refraining from comparing the dosing data with the tank level data;
• comparing the dosing data with the tank level data;
• and
• based on the comparison:
• initiating a virtual DEF quality detection check;
• and
• causing to present an indication that the virtual DEF quality detection check is being initiated on a display.

A method for detecting level sensor malfunction or tampering based on reductant consumption in an aftertreatment system, the method comprising:

• receiving, at one or more processors, dosing data associated with an amount of DEF supplied to the aftertreatment system;
• receiving, by the one or more processors, tank level data from a level sensor in a DEF tank;
• comparing, by the one or more processors, the dosing data with the tank level data as part of a primary check;
• and
• based on the comparison:
• initiating, by the one or more processors, a quality check;
• and
• causing, by the one or more processors, a presentation of an indication that the quality check is being initiated;
• and
• wherein upon identifying a failure of the primary check, causing a presentation of an indication that the primary check has failed.