Patent ID: 11873751
Assignee: CATERPILLAR INC.
Field: Environmental technology (Chemistry)
Classification: CPC F  Y | IPC F

Claim 3:
4. The first system of claim 3, wherein the pressure data is first pressure data and the pressure sensor is a first pressure sensor and the instructions further cause the controller to:
receive, from a second pressure sensor, second pressure data indicative of a third fluid pressure at a second location, the second location being disposed along the return flow line downstream of the return valve;
determine, from the second pressure data, a third fluid pressure at the second location, wherein the third fluid pressure represents the pressure in the return flow line after the return valve has been closed;
determine that the third fluid pressure is greater than a predetermined pressure; generate a diagnostic code indicating that at least a portion of the first system is functioning improperly based at least in part on determining that the third fluid pressure is greater than the predetermined pressure;
store the diagnostic code in the memory associated with the controller; and
cause the pump to cease operation based at least in part on generating the diagnostic code.