There might be some pro tools that can do this with a Volvo-specific sw load, but it'll be expensive. Generic tools won't even query the TCM, much less read a proprietary Volvo PID. I'm sure it's possible though.

Why do you want to read this particular value? Maybe you can put a thermometer on the output cooling line.

 

Maybe you can put a thermometer on the output cooling line.

After speaking with a Tech Rep from Aisin on this very question: you are correct. You want to put the temperature sensor in the output line of the transmission which is the lower of the two oil lines on the transmission. This is because you want to know the temperature of the oil leaving the sump.

 

A couple of guys have taken their Polestar's to the track and reported getting into a "limp-mode" where the transmission forces shifts at 5500 rpms. I'm assuming this is because the fluid is getting too hot. I'm probably going to install an auxiliary fluid cooler before I take mine to the track, but I'd like to get a live temp reading to monitor it just to be safe. I'm already using torque pro to monitor a few other things. It would be nice if it could do this as well. It has the ability to read custom PIDs, I would just need to know the number, then probably have to do some math to get it to show up as a temp reading.

 

i had this happen to me . it went in to limp mode on my last lap . i cleared the codes after letting it cool down and drove 5 hours home with out any problems.

 

My current rental SEAT Leon turbo something or other with both water and engine oil temperature readouts read pretty close to each other in normal driving. I attribute this to the water-over-oil engine oil heat exchanger, one that's very similar to the ATF cooler (and engine oil too for that matter) on my XC60. Based on this I wouldn't be surprised if your ATF readings are real.

 

Check this in torqueapp:
- Custom PID -> new
- PID: 221e3f
- full Name: as you choose
- shortname: Temp A/T
- min: -40
- max: 200
- multiplier: x1
- Celsius
- formula: B
- Header: 7E1

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Check this in torqueapp:
- Custom PID -> new
- PID: 221e3f
- full Name: as you choose
- shortname: Temp A/T
- min: -40
- max: 200
- multiplier: x1
- Celsius
- formula: B
- Header: 7E1

I tried this today with Torque on my S80 V8 (TF80-SC), didn't work at all - just read 0C and never changed.

 

torque works with "transmission temp method 1" using my PLX Devices adapter. it's slower than what VIDA updates at, but it is correct.

 

I've tried method 1 and it seems to just mirror the coolant temp. I just tied the custom PID above and it returns a number I'm more inclined to believe. I'm going to monitor both of them just to be safe.

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I've tried method 1 and it seems to just mirror the coolant temp. I just tied the custom PID above and it returns a number I'm more inclined to believe. I'm going to monitor both of them just to be safe.

A good test would be to start the vehicle cold and just leave it in park. The engine coolant temp will rise but the transmission fluid temp shouldn't really go up hardly at all.

 

That's perfectly consistent. The transmission is "cooled" by piping its fluid through the radiator, so steady-state the two should be roughly the same. When cold and the trans in Park, the radiator will rise faster. Sounds like you have the right pid.

 

That's could be the case. The older platform probably has a different ECU so the non-standard PIDs could be different.

 

It is the same P3/EUCD platform, but the TCM software I'm sure is different and probably does have different non-standard PIDs.

 

Wondering how I can do this with my ScanGauge II tool on my P2 S60... Custom PIDs can be programmed to read out. Would the Torque app entry be similar, or is that tool dependant?

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On the intercooler there is a sensor on the discharge port. Does anyone know what this sensor is reading and whether it can be displayed by the Torque App?

 

I think you might be talking about the manifold air pressure sensor (MAP).

 

Automatic transmission temperature is correctly displayed in "Car Scanner ELM OBD2" for Android and iPhone.
Pretty cool, has plenty Volvo-specific PIDs:
- engine oil temperature,
- coolant temperature,
- AT fluid temp,
- catalyst temp,
- MAF rate g/sec,
- battery SoC and charging current,
- AT gear and torque,
- DPF soot (g) and DPF temperature (diesel)
- Aircon pressure and front cooling fan speed

Works best in 2008-2014 Volvos. There are two profiles: Volvo OBD2, and Volvo 2010+
All parameters for XC70 2012: imgur.com/a/YX3nprB

Screenshots:

 

Thanks for this, great to have an accurate reading!!

 

Does it pull boost pressure as well? My ScanGauge II too does not pull boost pressure readings on my S60. My old P1 S40 it pulled boost pressure reads from, but not my S60 for some reason.

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Tried that and works! Now to find a way to keep that app active while driving longer stretches: at this point the screen shuts down at the general Android phone screen timeout.

Thanks so far 🙃

Any info on what the safe temperature range is for the transmission?

 

Car Scanner should work without any interruption. Search in phone settings, or app settings to keep Car Scanner screen on.

 

The currently visible app permissions suggest that the app has permission to keep the phone from entering sleep mode. I have contacted the developer to see how to progress from here

 

Adding to this, I can verify that CarScanner works with the SPA V90CC when paired with the VeePeak BLE tool.