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Hey all,
I bought an ELM 327 v2.1 super cheap off of ebay but it doesn't seem to want to show things live (lets not discuss how foolish that might have been ;) ) . I'm fine to buy one of the recommended ones, but before I do, can someone confirm that this 327 2.1 is probably just not compatible and that I'm not doing something stupid? Also, is there any significant difference between the recommended ones on the google sheet, or possibly any new ones not listed there that are better? Since I'm (probably) going back to not cheap out on it [as much], I might as well get a good one, but if the only difference between the $10 one and the $63 one on the sheet is the samples per second which I don't think I care about, might as well get the cheaper one as long as it's reliable.

Thanks!
 

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Hey all,
I bought an ELM 327 v2.1 super cheap off of ebay but it doesn't seem to want to show things live (lets not discuss how foolish that might have been ;) ) . I'm fine to buy one of the recommended ones, but before I do, can someone confirm that this 327 2.1 is probably just not compatible and that I'm not doing something stupid? Also, is there any significant difference between the recommended ones on the google sheet, or possibly any new ones not listed there that are better? Since I'm (probably) going back to not cheap out on it [as much], I might as well get a good one, but if the only difference between the $10 one and the $63 one on the sheet is the samples per second which I don't think I care about, might as well get the cheaper one as long as it's reliable.

Thanks!
I had a cheap ELM327 from ebay and it was defective and now is in a landfill. Just buy the cheap one on the list that is compatible and it will do the job.
 
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Welp, I got the "Vgate iCar Pro Bluetooth v3 (35+ samples/second, Android Only)" -- not even the cheapest one -- which is on the spreadsheet and Torque pro connects to it but it can't connect to the car's ECU. That's pretty frustrating :( Torque pro lists that it is seeing "faults" but I can't find anywhere to read what these faults are, nor get any kind of log output of what it's doing to try to connect, and that's doubly frustrating. I've rebooted the phone multiple times, uninstalled the app, and reinstalled it multiple times, tried all sorts of different settings, etc. Still nothing. Ugh.
 

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Welp, I got the "Vgate iCar Pro Bluetooth v3 (35+ samples/second, Android Only)" -- not even the cheapest one -- which is on the spreadsheet and Torque pro connects to it but it can't connect to the car's ECU. That's pretty frustrating :( Torque pro lists that it is seeing "faults" but I can't find anywhere to read what these faults are, nor get any kind of log output of what it's doing to try to connect, and that's doubly frustrating. I've rebooted the phone multiple times, uninstalled the app, and reinstalled it multiple times, tried all sorts of different settings, etc. Still nothing. Ugh.
Maybe you can find somebody nearby that has a working setup and see if it is the module or the software setup? Also maybe try it on another friends car with a OBDII port.
 

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I’m guessing that I’m doing something wrong. I bought a Kobra ELM327 reader for my ‘17 Bolt. I imported the PID list into EngineLink, but can’t seem to get readings to display after adding to the dashboard.

The scanner seems to be connecting and reading, just can’t get seem to the Bolt-specific PIDs to display.

Tried using TorquePro Lite, manually entering a couple of the PIDs with no luck (but I was able to display some “standard” items such as ambient temperature).

Any thoughts? Is my reader perhaps not compatible?
 

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@Telek thanks much for creating and sharing this list, greatly appreciate all of your work and for giving us all visibility into the inner workings of our Bolt. Looking through the usable PIDS tab of your sheet and comparing to the results from the GM GDS2 scan tool dumped to file posted here I see values for min cell ID and voltage, max cell ID and voltage, and min to max % delta.

The GM GDS2 sheet headings indicate "stored data" but those could also be calculated by the tool and reported as all 96 cell voltages are already available.

If those are indeed stored in the vehicle could they be unknown or previously unidentified PIDs? If not, is there any way to have just those specific values reported in Torque instead of scanning all 96 values to manually identify min, max and avg cell values? The value that appears to be the most helpful to diagnose a bad Bolt pack is the min to max delta % reported, it sure seems that the vehicle should report a DTC when that % delta exceeds a given threshold...
 

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To all loggers, how long does it take you to get a full set of 96 cell voltages? Can I assume that you unplug the EVSE, start the car, and turn off the HVAC, and do not precondition?

I have logged about 8 times, and only got one full set of 96, due to limited time. Usually I have about 20 minutes and get about 45 cells, then I have to actually go somewhere! This is using the recommended Vgate adapter. I'll try letting it log for a couple hours soon. I am assuming it is best to be charged to at least hilltop level ~88%, and that actively charging would skew the results.
 

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To all loggers, how long does it take you to get a full set of 96 cell voltages? Can I assume that you unplug the EVSE, start the car, and turn off the HVAC, and do not precondition?

I have logged about 8 times, and only got one full set of 96, due to limited time. Usually I have about 20 minutes and get about 45 cells, then I have to actually go somewhere! This is using the recommended Vgate adapter. I'll try letting it log for a couple hours soon. I am assuming it is best to be charged to at least hilltop level ~88%, and that actively charging would skew the results.
I don't know about data-logging but I have 32-33 cells on one screen and it only takes a few seconds to update the one screen. I don't think that it should take that long to log 96 cells. maybe a few minutes but not 40 minutes.... Doesn't sound right to me. Sorry, not much help.
 
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I don't know about data-logging but I have 32-33 cells on one screen and it only takes a few seconds to update the one screen. I don't think that it should take that long to log 96 cells. maybe a few minutes but not 40 minutes.... Doesn't sound right to me. Sorry, not much help.
that is plenty helpful. What adapter are you using? I might try a iphone + a fancy OBD adapter.
 

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that is plenty helpful. What adapter are you using? I might try a iphone + a fancy OBD adapter.
I am using an OBDLink LX Bluetooth: Professional OBD-II Scan Tool for Android & Windows Tablet
because at $50, the extra $20 was not that much more expensive than the slower one... BTW, I think Torque Pro and this adapter only works with Android.
 
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Does anyone have a PID for instant miles per kWh? I have downloaded what I belief to be the most recent PID spreadsheet but do not see that option on the listing. If I am not overlooking it, has anyone tried to develop a PID to measure miles/kWh?
 

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Does anyone have a PID for instant miles per kWh? I have downloaded what I belief to be the most recent PID spreadsheet but do not see that option on the listing. If I am not overlooking it, has anyone tried to develop a PID to measure miles/kWh?
Instant? Nope - not gonna happen. You need some time interval specified. The "realtime" bar on the energy screen is a decent indicator of very recent mi / kWh. To calculate it you need more than a logger - you need to get the difference in miles and the cumulative energy used over some time interval.
 

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Just a quick update. I returned the Vgate iCar Pro Bluetooth v3 after I tried it on my wife's Ford Flex and it didn't connect to ECU there either. Received the new one which worked right away. (y)
 

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The CSV works well with Torque Pro, but the following show no values (or occasionally obviously incorrect values like negative values):
  • Bat Cap Est
  • Batt % DIC
  • SoC Raw HD (however, SoC Raw does show a reasonable value)
Any ideas why?

2017 Bolt, has both 2018 recall firmware updates (ECU and infotainment)
Torque Pro 1.10.114 (Nov 14, 2019)
Android 10
Vgate iCar 4BLE

The other thing that I noticed is that out of the 96 cell voltages, the difference between the highest and lowest was 0.015V to 0.025V, with most of the cells having voltages around the midpoint of those two. Cause for concern?
 

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I think I read someone on here say that a spread of 0.03 V could trigger a recall?

My max difference is around 0.023 V from one low cell group and one high cell group, but I am going to check the spread again after a full charge to 100%.
 

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The CSV works well with Torque Pro, but the following show no values (or occasionally obviously incorrect values like negative values):
  • Bat Cap Est
  • Batt % DIC
  • SoC Raw HD (however, SoC Raw does show a reasonable value)
The other thing that I noticed is that out of the 96 cell voltages, the difference between the highest and lowest was 0.015V to 0.025V, with most of the cells having voltages around the midpoint of those two. Cause for concern?
Some require something waking the car up, like touching the silver lock button on the driver's door, or touching the release button on your EVSE. Pressing the brake pedal works too. Some, like pack voltage, don't come up unless the car is turned on. Some of the air temperature sensors don't come up occasionally, or come up as -40 F, and Torque Pro tells me to watch out for icy conditions. One of the raw SOC displays occasionally is wonky. Never had a problem with Bat % DIC, or Bat Cap Est.

Ours has shown that same voltage spread since installing Torque Pro in June of 2018.
 

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Some require something waking the car up, like touching the silver lock button on the driver's door, or touching the release button on your EVSE. Pressing the brake pedal works too. Some, like pack voltage, don't come up unless the car is turned on. Some of the air temperature sensors don't come up occasionally, or come up as -40 F, and Torque Pro tells me to watch out for icy conditions. One of the raw SOC displays occasionally is wonky. Never had a problem with Bat % DIC, or Bat Cap Est.
The missing values that I encountered were while the car was on, both while not moving and during/after driving.
 

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The missing values that I encountered were while the car was on, both while not moving and during/after driving.

That hasn't been my experience. There are folks on here far more knowledgeable than me about this stuff. Hopefully, they will chime in.
 
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