My washer (500 plus series) has a odor during operation that smell strongly of sewer, where is it coming from and how can I solve the problem

Make sure the drain pipe out of the machine is installed at the right height per owners manual and the stand pipe isnt plugged with debris which will back wash into the pump area of machine,also make sure the pipe and drain hose arent sealed they need outside air or the system will vapor lock per say and siphon back into the machine,overall make sure there isn't and obstructions to the drain from kinked hoses or debris in the drain lines,flush out all lines with fresh water and make sure lines take all water and dont back-up during rinse-out

The error code says SUDS OR PUMP Problem