p0598 wont go away

Question

2 thermostats.
, checked wiring
both of them not oem
from oreilys auto parts any one else have same
roblem endwhat are the factory specs. for the sensor/sending unit and thermostat

Answer 1

P0598 Thermostat heater control circuit low.

there is sither a open or short in the thermostat heater circuit. The sensor is part of the thermostat housing. On one side of the connector there is (+) voltage and the other is DME (-) . The DME cause the thermostat to open earlier