Oil TEMP Sensor Location?

[sbagdon]

Hooked up an iPhone obd-ii reader, and see that the code for oil TEMP is showing -40C. The pcm is putting out a value on the CAN bus, yet wondering what -40C means? Is it a phantom-code, or is there really a sensor that's gone bad? I believe I've found the oil PRESSURE sensor, yet can't find an oil TEMP sensor.

Is there really an oil TEMP sensor on this motor?

Thanks!

[gmtech1]

What was the code? What year and engine do you have?

[sbagdon]

Originally Posted by gmtech1

What was the code? What year and engine do you have?

No CEL or MIL code.

Reading the CAN Bus with a ELM 327, to EngineLink. CAN Bus code is 015C. Value reported is -40C.

Engine Coolant, Throttle Position, Relative Throtttle Position, Boost/Vacuum, Engine RPM, Speed, etc, all return valid values.

98 1.8L Auto.

[maxwedge]

Could be wrong here but I do not think you have an oil temp sensor in that car, so you see a default reading.

[sbagdon]

Originally Posted by maxwedge

Could be wrong here but I do not think you have an oil temp sensor in that car, so you see a default reading.

Makes sense, yet interesting. I've seen both no-data, and valid-data, yet not default-data. Thanks!

[gmtech1]

After doing some digging on Alldata, I agree with Max. Not seeing a oil temp sensor called out on that vehicle. So a default reading it is.

[sbagdon]

Originally Posted by gmtech1

After doing some digging on Alldata, I agree with Max. Not seeing a oil temp sensor called out on that vehicle. So a default reading it is.

Sounds cool, just suprised, I've never seen a CAN Bus with invalid data. Either "0" or something valid, yet nothing like -40C.

Hey, learn something new, every day. ; )