[Lyricalruby]

Was looking at Forscan earlier and just generically looking at random PIDs and noticed that in the Instrument Cluster module, it said <pid> OILPRESS - FAULT


??? No CELs or codes.

No oil light flashing or anything. And it does light up when cranking the car/accessory mode, so the lights not burnt out...
Is there anything I should be looking for?

 

[Lyricalruby]

Bump

 

[Lyricalruby]

So it saying -FAULT- Isn't an issue?

 

[Lyricalruby]

Does it say fault when KOEO or KOER or both?

Gooooood question! I'll grab the laptop in a moment and find out! Oh and I do periodically get an odd B1901-20 can 2 communication bus fault - receive error

 

[Lyricalruby]

Sorry for the late reply. When the vehicle is in KOEO it shows LOW for the value. When in KOER it shows FAULT.

 

[Lyricalruby]

Let me rephrase, with the engine off, the value shows as "LOW". When the engine is running, the value is showing as "FAULT".

 

[Lyricalruby]

From the workshop manual:

"The instrument cluster is hardwired to the oil pressure switch. When there is low (under 41 kPa [6 psi]) or no oil pressure, the oil pressure switch remains closed, removing the ground to the instrument cluster. When sufficient oil pressure exists, the oil pressure switch opens, providing a ground signal to the instrument cluster. The instrument cluster monitors the oil pressure ground signal and commands the low oil pressure warning indicator on or off according to engine oil pressure."

Also, an oil pressure switch failure would supposedly set a C1284 code.

Your IC light appears to be working correctly. The oil pressure switch seems to be working correctly. And Forscan says "Low" when the oil pressure is Low.

Forscan also says something different than "Low" when the oil pressure is not Low. So it is picking up the changed state. Unfortunately, it seems the programmers chose to use the word "Fault" rather than "OK" to describe the changed state.

Unfortunately, I don't have a Taurus anymore to check if Forscan says the same on mine.

Thank you! That's very interesting. You can understand why it would seem concerning since they used fault instead of ok.
I have a few undiagnosed issues with the car, so I've been skimming through Forscan data looking for anything "out of place". Well something telling me it's a "fault" definitely seemed out of place! I don't think I've had a C1284 code, just a B1901 code that comes back almost daily. You wouldn't happen to have anything on that in your manual would you?

 

[Lyricalruby]

Interesting. These are the 3 I get regularly.

Edit: these code definitions are from Forscan and the modules listed in Forscan. I should probably cross reference them to see if the listed descriptions match.