Self-diagnostic busses? Specifically oil pressure? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Nezz · 07-01-2012, 08:54 AM

I know it's old fashioned paranoia but right back to my ancient Celicas I've never had a car without oil pressure display, with the exception of my Honda.

Is there provision for oil pressure display/readings on the OBD-II bus in our cars? Is there a CANBus fitment that we can utilise? I was thinking about one of the various gauge solutions and whatnot, or if I'll have to somehow figure out how to utilise the internal wiring harnesses. I don't really want to dig through the dash to stick a wire.

Ranatsu · 07-03-2012, 04:58 PM

I really don't believe the car actually knows the oil pressure. On the WRX and STi the oil pressure light is only a dummy light that comes on at like 5psi ie to late. If you want to monitor oil pressure you will probably have to get a gauge and use one of the oil galley plugs or something.

Nezz · 07-04-2012, 08:47 AM

Quote:

Originally Posted by Ranatsu

I really don't believe the car actually knows the oil pressure. On the WRX and STi the oil pressure light is only a dummy light that comes on at like 5psi ie to late. If you want to monitor oil pressure you will probably have to get a gauge and use one of the oil galley plugs or something.

Yeah. Been eyeballing em. Might have to work my way backward through the wiring harnesses.
(IE; To use the existing wiring system)

dexterium · 07-04-2012, 12:47 PM

My OBDII(Bluetooth + torque) reader reports that it has oil pressure readings, but I've never looked at them to determine accuracy. I can check tonight to see if it does.

yajin · 07-23-2012, 02:20 PM

Quote:

Originally Posted by dexterium

My OBDII(Bluetooth + torque) reader reports that it has oil pressure readings, but I've never looked at them to determine accuracy. I can check tonight to see if it does.

What OBDII adapater w/ bluetooth do you use? My OBD II BT adapter used for the previous cars of mine doesn't work with BRZ......

Guillaume · 08-13-2012, 04:19 AM

A little off topic, but where is the ODB port? I can't seem to find it.

neutron256 · 08-13-2012, 09:34 AM

As far as I can see Oil pressure/temp is not available on the OBDII bus. It is accessible through the OBDII port but on one of Toyota's proprietary busses you need TechStream or another speciality tool to view it.

07-01-2012, 08:54 AM	#1
Nezz 86DESU Join Date: Jun 2012 Drives: 86 GTS, S13, CB9 Location: Victoria Posts: 294 Thanks: 25 Thanked 69 Times in 51 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Self-diagnostic busses? Specifically oil pressure? I know it's old fashioned paranoia but right back to my ancient Celicas I've never had a car without oil pressure display, with the exception of my Honda. Is there provision for oil pressure display/readings on the OBD-II bus in our cars? Is there a CANBus fitment that we can utilise? I was thinking about one of the various gauge solutions and whatnot, or if I'll have to somehow figure out how to utilise the internal wiring harnesses. I don't really want to dig through the dash to stick a wire. Last edited by Nezz; 07-01-2012 at 08:56 AM. Reason: More detail

08-13-2012, 09:34 AM	#7
neutron256 Senior Member Join Date: Jan 2012 Drives: '13 GBS Subaru BRZ Location: Minneapolis, MN Posts: 2,030 Thanks: 680 Thanked 664 Times in 382 Posts Mentioned: 26 Post(s) Tagged: 1 Thread(s)	As far as I can see Oil pressure/temp is not available on the OBDII bus. It is accessible through the OBDII port but on one of Toyota's proprietary busses you need TechStream or another speciality tool to view it. __________________ -Fortes fortuna adiuvat (Fortune favors the bold)

07-03-2012, 04:58 PM	#2
Ranatsu Cone basher Join Date: Mar 2012 Drives: 2017 Subaru BRZ Series.Yellow Location: Dodgin cones in San Antonio, TX Posts: 800 Thanks: 51 Thanked 256 Times in 169 Posts Mentioned: 7 Post(s) Tagged: 0 Thread(s)	I really don't believe the car actually knows the oil pressure. On the WRX and STi the oil pressure light is only a dummy light that comes on at like 5psi ie to late. If you want to monitor oil pressure you will probably have to get a gauge and use one of the oil galley plugs or something.

07-04-2012, 12:47 PM	#4
dexterium Member Join Date: Jun 2012 Drives: Hot Lava MT Location: Outside Edmonton Posts: 26 Thanks: 5 Thanked 4 Times in 4 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	My OBDII(Bluetooth + torque) reader reports that it has oil pressure readings, but I've never looked at them to determine accuracy. I can check tonight to see if it does.

08-13-2012, 04:19 AM	#6
Guillaume Senior Member Join Date: Jul 2012 Drives: Exige S 240 Location: Belgium Posts: 732 Thanks: 319 Thanked 602 Times in 287 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	A little off topic, but where is the ODB port? I can't seem to find it.

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