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Hi John, I'm Clayso a certified master automobile technician with 30 years of automotive repair and diagnostic experience.
From your description most likely the Engine Oil Temperature Sensor (EOT) has failed. You can check the EOT sensors resistance in a pot of water on the stove. The link below is the full description of the EOT sensor and its circuit.
I hope this information is helpful. If you have any questions let me know. You can reply back to me through this thread at any time.
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Looking down at the engine the EOT is to the right of the exhaust manifold mounted in the side of the block. The EOT sensor has a gray two pin connector. The link below is the best image I can find for its location.
Engine Oil Temperature Sensor Location
Original equipment parts are recommended.
Hope this helps.Thanks
That is very odd for a vehicle to set a code for a component that doesn't exist.
That's cool. I did find the EOT in a circuit diagram that states the engine oil temperature sensor is located on the lower right front of the engine. The EOT sensor should have a green wire and a black wire.
Let me know
That looks to be the oil pressure sensor. When you go to swap out the sensor make sure the connector is intact. The wire colors should be green and black.
Let me know how this works out.
I just found a better image of the location, but looks like you found it.
Have you cleared the code and driven the vehicle?
Attached is a diagnostic procedure to follow. Basically all that is being checked is the ground from the ECM to the sensor and the voltage that changes with the temperature change.
DTC's P0197 & P0198
Let me know if there is ground and if the temperature values change from a cold engine to a warm engine. Thanks
It's on the side of the block behind the manifold.
EOT with F68 Connector
F68 is the connector number with 2 wires black and green.
That's cool, I'll be here.
Hey John, hadn't heard from you in a couple of days. Let me know if swapping out the EOT changed anything.
That's cool, I'll be here tomorrow.
Looks to be correct. You can check the resistance with an OHM meter, should be about 0.50kΩ at 70°F.
Both sensors are temperature sensors and when it comes to costs it's smarter to have one part number for 2 different jobs. I agree they could have done a better job listing as such.
Not quite sure where you're coming from. I'm to old to go back to school. lol.
The OPS/EOT should have a green wire and a black wire. With the OPS/EOT disconnected verify that the green wire has 5v with the key on, and check the black wires continuity to ground. The green wire could also be black with a red stripe. I see it 2 different ways in my diagrams.
The CTS should have a black/red wire and a yellow wire.
Let me know if there is ground and 5v at the EOT connector.Thanks