[IAmBoxyButGood]

So just had a check engine light on our T8 XC90. No driving issues, just the light. Took it to dealer. The tested for several hours and found nothing and the light went off. Said there was some sort of battery fault stored in history but they tested the battery and there were no issues.

The lead tech asked if we parked in a closed garage, which we do. Then asked if we locked the car at night while charging… which we do not.

He said that was most likely the culprit. Apparently if not locked, the car CONSTANTLY expects you to come back out and start it up, so it never truly shuts off. Some systems stay booted up “ready to drive” while the car is unlocked. Much like leaving a computer turned on too long, it needs a reboot.

He said this was a newer issue only with the 22/23s but that it was common with their customers.

He said the other issue that he has seen frequently is if you have to reset your google password, that you have to manually go in and change the password in the car as well. Some sort of glitchy oversight where it constantly tries to load your profile but can’t (since password is wrong) and it has a brain fart.

Not sure if this is your problem, or if you can even test it since your is still at the shop. But hopefully this helps someone out!

@Ferdinand aka gravyboat can you ask the dealer what the code was?

 

[VolvoSafety]

You have MY23? That's the newest ERAD design w/ higher output, along w/ ER battery, both landed for MY22.5. And I think the third iteration of ERAD.

What's your ERAD issue? Hope its not a harbinger of a another, broader design issue.

Yes I have a 23. The issue was a metal in metal sound when going from a dead stop. The car is ready on Monday so I'll see what the repair order says.

 

[Ferdinand aka gravyboat]

@Ferdinand aka gravyboat can you ask the dealer what the code was?

Told me it was some sort of battery fault but did not tell me the actual code.

 

[IAmBoxyButGood]

Told me it was some sort of battery fault but did not tell me the actual code.

I'm working closely with my dealer on my issue, and I told them I was active here. Being that they're only seeing it with my car, which is worrisome, they said if we found other reports from users here, that it could help get an answer. I'm sure your service department knows the exact error code and it would be reasonable for you to ask them for it. I know that if this is a software error, they need as much of a dataset as possible to be able to figure out why it's happening and when to be able to squash the software bug. So maybe ask them for the code that they cleared? If it's the same as mine, I might PM you for your VIN so that my dealer can work with Volvo comparing the 2 cases.

 

[Ferdinand aka gravyboat]

I'm working closely with my dealer on my issue, and I told them I was active here. Being that they're only seeing it with my car, which is worrisome, they said if we found other reports from users here, that it could help get an answer. I'm sure your service department knows the exact error code and it would be reasonable for you to ask them for it. I know that if this is a software error, they need as much of a dataset as possible to be able to figure out why it's happening and when to be able to squash the software bug. So maybe ask them for the code that they cleared? If it's the same as mine, I might PM you for your VIN so that my dealer can work with Volvo comparing the 2 cases.

I’ll ask them on Monday!

 

[Tank010]

Please someone explain to me the rationale behind buying a T8. The price difference can easily pay for the gas people save on using it as electric. Especially the environmental damage caused by the battery pack, the charging power more than likely comes from fossil fuel and isn’t free so let’s say they drive that 30 miles electric range from $5 vs using $8-$9 gas.
Not to mention all these issues we see here!

 

[ActiveArch]

After a total of 120 miles on the odometer, my 23 XC90 Recharge started showing the check engine light. It went back to the dealer and 3 days later, I got it back with a new EVAP hose. It was frustrating, for sure, but more so, it didn't instill much confidence in this new vehicle.

Then, the very next day, the check engine light came back on. This time, at one point, the PURE mode was grayed out, completely not selectable, but other than that everything else seemed normal. The dealer took the car and this time found that the car was throwing a BCM-P0D1F62 error.

The dealer hadn't seen this error before, but apparently Volvo corporate is well aware of it. They say it's an unknown software error, is rare, and that they're working on a software fix for it. They cleared the error code and said that if it reappears, stop the engine, restart, and the code should clear. if not, keep restarting.

That was 2 weeks ago. Today the check engine came back on, after another 600 miles or so (we're up to just over 700 miles on the SUV). I tried stop -> restart several times. Check engine remained. Brought it to the dealer. Sure enough, it's the same error code.

I was told that software 2.8 is coming out in about 4 weeks (sometime in April 2023) with lots of changes and fixes for the AAOS cars, but likely won't address this specific issue. The dealer told me to expect to have the light come back on soon.

I'm not super thrilled about having an $80k SUV that has a software error that will leave a check engine light on my dash. Plus how am I supposed to know that the next time the check engine light comes on that it's the same problem?

The dealer has been great, but I'm fearful that with 2 different problems on 3 occasions after only 2 weeks of ownership, that I might be in for a rough time long term....


Anyone else experiencing this? Suggestions?

Hi there, I also have a 2023 xc90 T8, only 3k miles on it and got a check engine today. Contacted customer service and they said it looks like there’s a software glitch floating around and to give it a few days. Came here to see if anyone else is experiencing this and here we are. Hopefully they release an update very soon. Lol that this is even a thing that’s happening with our brand new cars. Software glitch activating a check engine light? That makes me feel wonderful driving around my infants. Not to rant but, rant. Eh.

 

[IAmBoxyButGood]

Hi there, I also have a 2023 xc90 T8, only 3k miles on it and got a check engine today. Contacted customer service and they said it looks like there’s a software glitch floating around and to give it a few days. Came here to see if anyone else is experiencing this and here we are. Hopefully they release an update very soon. Lol that this is even a thing that’s happening with our brand new cars. Software glitch activating a check engine light? That makes me feel wonderful driving around my infants. Not to rant but, rant. Eh.

Insist on getting the error code and report back here. This suv is a delight to drive, and I believe it's just a software glitch. Volvo's got to fix it though. Power in numbers.

 

[VolvoFaRmeR]

He said that was most likely the culprit. Apparently if not locked, the car CONSTANTLY expects you to come back out and start it up, so it never truly shuts off. Some systems stay booted up “ready to drive” while the car is unlocked. Much like leaving a computer turned on too long, it needs a reboot.

That’s just a half truth, trying to explain away the issue. I have 3 of these cars, mostly they park every night in a garage and remain unlocked. With over 100,000 cumulative miles the batteries are fine. The car does indeed power down after a set time, so the tech really doesn’t know what he is talking about. Besides, the system and controllers have a set parameter where they automatically reboot on their own after X number of key cycles. This is why sometimes it takes longer to load systems at startup everyone once in a while.

 

[ActiveArch]

After a total of 120 miles on the odometer, my 23 XC90 Recharge started showing the check engine light. It went back to the dealer and 3 days later, I got it back with a new EVAP hose. It was frustrating, for sure, but more so, it didn't instill much confidence in this new vehicle.

Then, the very next day, the check engine light came back on. This time, at one point, the PURE mode was grayed out, completely not selectable, but other than that everything else seemed normal. The dealer took the car and this time found that the car was throwing a BCM-P0D1F62 error.

The dealer hadn't seen this error before, but apparently Volvo corporate is well aware of it. They say it's an unknown software error, is rare, and that they're working on a software fix for it. They cleared the error code and said that if it reappears, stop the engine, restart, and the code should clear. if not, keep restarting.

That was 2 weeks ago. Today the check engine came back on, after another 600 miles or so (we're up to just over 700 miles on the SUV). I tried stop -> restart several times. Check engine remained. Brought it to the dealer. Sure enough, it's the same error code.

I was told that software 2.8 is coming out in about 4 weeks (sometime in April 2023) with lots of changes and fixes for the AAOS cars, but likely won't address this specific issue. The dealer told me to expect to have the light come back on soon.

I'm not super thrilled about having an $80k SUV that has a software error that will leave a check engine light on my dash. Plus how am I supposed to know that the next time the check engine light comes on that it's the same problem?

The dealer has been great, but I'm fearful that with 2 different problems on 3 occasions after only 2 weeks of ownership, that I might be in for a rough time long term....


Anyone else experiencing this? Suggestions?

Just an update, my check engine just went away on its own today.

 

[IAmBoxyButGood]

Just an update, my check engine just went away on its own today.

@ActiveArch - I've had that happen and had it immediately return or sometimes come back in a day or two. The dealer said that the "fix" is to start and stop the car a bunch of times. I've not had success in deliberately doing that (including 20+ start/stops). I feel like it has to do with number of starts over some time and luck.

The code does get stored in memory though even when the light's no longer illuminated. If you're close enough to your dealer, I recommend having them use their scan tool to see what code was triggered. That won't only be helpful for you to know, but for me too....

 

[VolvoFaRmeR]

Can’t AAOS software allow for remote diagnostics now and the ability to see codes by a dealer without the car physically being there?

 

[VolvoSafety]

Just an update, my check engine just went away on its own today.

Just picked my car up from the dealer, it was there for a few things, including this. When I ran the check engine light through Torque it showed as code P0D1F, however the dealer showed the code as ECM-P0A7B68 when they diagnosed thru VIDA. They stated that there is no known technical journals for this and a software update should be all that's needed

 

[IAmBoxyButGood]

Just picked my car up from the dealer, it was there for a few things, including this. When I ran the check engine light through Torque it showed as code P0D1F, however the dealer showed the code as ECM-P0A7B68 when they diagnosed thru VIDA. They stated that there is no known technical journals for this and a software update should be all that's needed

Torque as in the smartphone app? I didn't realize that they would report on hybrid system reports. What scanner hardware are you using? I'd like to be able to see what's what to try to eliminate dealer trips.

 

[VolvoSafety]

Torque as in the smartphone app? I didn't realize that they would report on hybrid system reports. What scanner hardware are you using? I'd like to be able to see what's what to try to eliminate dealer trips.

Yes the Torque app and a cheap generic OBD II Bluetooth dongle. It did report on the error code associated with the checkengine light, however it didn't provide any details beyond that. Also it seems like the code I got didn't match the one listed in the delay repair order, so not sure if it is accurate? However, my assumption is that there are additional codes that are not viewable without VIDA. For instance, my Repair Order listed another fault (BCM) that I couldn't see anywere at all.

 

[Peter1234]

Torque as in the smartphone app? I didn't realize that they would report on hybrid system reports. What scanner hardware are you using? I'd like to be able to see what's what to try to eliminate dealer trips.

Another phone app Car Scanner ELM OBD2 will show live parameters and DTC codes in the T8 hybrid drivetrain:

Misfiring on all cylinders - Volvo still unable to...

How do I do that? I have several different dongles. I am using the following OBDII app for diagnostics: https://play.google.com/store/apps/details?id=com.ovz.carscanner&hl=en&gl=US I believe any ELM327 based OBDII adapter will work, the majority of Bluetooth/Wi-Fi OBDII diagnostic tools are...

www.swedespeed.com

 

[IAmBoxyButGood]

Yes the Torque app and a cheap generic OBD II Bluetooth dongle. It did report on the error code associated with the checkengine light, however it didn't provide any details beyond that. Also it seems like the code I got didn't match the one listed in the delay repair order, so not sure if it is accurate? However, my assumption is that there are additional codes that are not viewable without VIDA. For instance, my Repair Order listed another fault (BCM) that I couldn't see anywere at all.

Another phone app Car Scanner ELM OBD2 will show live parameters and DTC codes in the T8 hybrid drivetrain:

Misfiring on all cylinders - Volvo still unable to...

How do I do that? I have several different dongles. I am using the following OBDII app for diagnostics: https://play.google.com/store/apps/details?id=com.ovz.carscanner&hl=en&gl=US I believe any ELM327 based OBDII adapter will work, the majority of Bluetooth/Wi-Fi OBDII diagnostic tools are...

www.swedespeed.com

Thank you both. I have Car Scanner ELM ODB2. I think it's my reader that's junk. I'll have to try another. There's definitely stuff in VIDA that's not over ODB2, but I would have expected stored error codes to be visible via ODB2.

 

[IAmBoxyButGood]

sorry for this long post - but I'm getting furious and I want to get all of your thoughts and document mine-

The check engine is back on on this (felling not so) new SUV for the 5th time is as many weeks of ownership, with only 1700 miles on the odometer. Incredibly, when we're done with this repair, more than 15% of those miles are going back and forth to the dealer's shop!

I don't fault the dealer at all, Volvo hasn't given them a fix, but I'm not driving around a new car that has a check engine on. The dealer has been sympathetic and appears to be doing all that they can. I don't feel bad for them though, they're getting paid by Volvo for this warranty work and loaners. I'm thankful that the dealer is on the way with a loaner (I'm 30 miles from the dealer) and to take my car back to the shop.

To recap:
The first trouble was the evap hose that needed replacing after starting the car the very first morning I owned it with under 100 miles on the car. Then the check engine light has been on another 3 times (at about 100 miles, 700 miles, 1400 miles) for the BECM-P0D1F62. This 5th time I assume will be the same battery ecm error, but I have no way of knowing and I would be a fool to ignore the generic check engine warning on a new car that is already problem ridden.

I'm thinking this part bit out here as much for my own notes as I am for feedback from all of you:

Supposedly Volvo told the dealer to tell me that I should "just" restart the car a bunch of times to make the light go away. I've not been successful in making the light go away with over 15 restart cycles. It did turn off one of the times after driving home after the light first appeared, but other than that, it's stayed on until reset by the dealer. I'm not off-base that requiring me to "reboot the car" over and over until the warning goes away is unreasonable right, whether that works or not?

Another note and question for your input: I factory reset the head unit last week, to fix a Care Key issue (also a software bug). The dealer hinted that the week 16 release of 2.8 for Volvo's AAOS is going to address a lot of issues, but I feel like this is a software issue on a module vs the head unit. What are your thoughts, does Volvo package system monitoring software updates in their AAOS updates? I expect infotainment to be separate from mechanical/monitoring/cam/etc.

I'm no statistician, but I do know a LOT about software, it's a big part of what I do for a living. If this is a software error, how are they not seeing more 2023.5 XC90 T8's with this? Supposedly, I'm the only one.

If there's a software bug, it's either going to hit a lot of cars with the same hardware (mechanically T8's are essentially the same short the surely insignificant here potential differences seats, audio, heads up, etc) or there's specific / defective hardware that is triggering a software bug. On that second part, a software bug might only trigger with certain lot numbers of a specific piece of hardware. Maybe there's a variation of a chip on a module that can incorrectly report whatever this is and it needs to be coded to be ignored. ---OR maybe it is bad hardware.

Volvo says it's software and not the BECM. I cannot understand why they would try replacing the BECM to start. My bigger fear is that I've got a bad battery somewhere in the array, it'll be ignored just long enough for me to go out of lemon law range and they'll say it's not a warranty item.

Lemon Law thoughts:
I really really really don't want to lemon law this thing, but this will be the 4th time back in the shop for this same problem, 5th overall. In my state, after 2 repair attempts for the same problem, I can send a demand letter and if they don't fix it after the 3rd time, it's a lemon. I bet Volvo will try to claim that they didn't try to fix it, no repair attempt was made. It feels like an easy argument, I gave them the opportunity to fix it. Claiming ignorance or an inability to fix a "known problem" on their product should not reasonably exempt them from the lemon law, otherwise after the 2nd try they just say they don't know how to fix to get out of it.

Also, sadly after only 5 weeks of ownership, today (Saturday) will be my 11th day that the SUV will be in the shop, and I probably won't get it back until Monday, so I'll be at day 13 already. My state has vehicles be lemon qualified after 20 days in the shop due to defect/problem, regardless of how many times they tried to fix each.

Hey, and on the bright side, so far my 4 loaners have been an XC90 B6 (same one twice), an XC60 B6, and an XC40 B6 (I think) all with under 700 miles on them. None were plug ins. The XC90 T8 drives sooooo much better than any of the loaners. There's zero comparison between the XC90 B6 and T8's acceleration, how they feel and sound at low speeds I wonder what they'll bring me this time, maybe a s90 to toy around in. I should start leaving notes to see if other XC90 T8 drivers are in the loaner for the same problem

 

[Ferdinand aka gravyboat]

sorry for this long post - but I'm getting furious and I want to get all of your thoughts and document mine-

The check engine is back on on this (felling not so) new SUV for the 5th time is as many weeks of ownership, with only 1700 miles on the odometer. Incredibly, when we're done with this repair, more than 15% of those miles are going back and forth to the dealer's shop!

I don't fault the dealer at all, Volvo hasn't given them a fix, but I'm not driving around a new car that has a check engine on. The dealer has been sympathetic and appears to be doing all that they can. I don't feel bad for them though, they're getting paid by Volvo for this warranty work and loaners. I'm thankful that the dealer is on the way with a loaner (I'm 30 miles from the dealer) and to take my car back to the shop.

To recap:
The first trouble was the evap hose that needed replacing after starting the car the very first morning I owned it with under 100 miles on the car. Then the check engine light has been on another 3 times (at about 100 miles, 700 miles, 1400 miles) for the BECM-P0D1F62. This 5th time I assume will be the same battery ecm error, but I have no way of knowing and I would be a fool to ignore the generic check engine warning on a new car that is already problem ridden.

I'm thinking this part bit out here as much for my own notes as I am for feedback from all of you:

Supposedly Volvo told the dealer to tell me that I should "just" restart the car a bunch of times to make the light go away. I've not been successful in making the light go away with over 15 restart cycles. It did turn off one of the times after driving home after the light first appeared, but other than that, it's stayed on until reset by the dealer. I'm not off-base that requiring me to "reboot the car" over and over until the warning goes away is unreasonable right, whether that works or not?

Another note and question for your input: I factory reset the head unit last week, to fix a Care Key issue (also a software bug). The dealer hinted that the week 16 release of 2.8 for Volvo's AAOS is going to address a lot of issues, but I feel like this is a software issue on a module vs the head unit. What are your thoughts, does Volvo package system monitoring software updates in their AAOS updates? I expect infotainment to be separate from mechanical/monitoring/cam/etc.

I'm no statistician, but I do know a LOT about software, it's a big part of what I do for a living. If this is a software error, how are they not seeing more 2023.5 XC90 T8's with this? Supposedly, I'm the only one.

If there's a software bug, it's either going to hit a lot of cars with the same hardware (mechanically T8's are essentially the same short the surely insignificant here potential differences seats, audio, heads up, etc) or there's specific / defective hardware that is triggering a software bug. On that second part, a software bug might only trigger with certain lot numbers of a specific piece of hardware. Maybe there's a variation of a chip on a module that can incorrectly report whatever this is and it needs to be coded to be ignored. ---OR maybe it is bad hardware.

Volvo says it's software and not the BECM. I cannot understand why they would try replacing the BECM to start. My bigger fear is that I've got a bad battery somewhere in the array, it'll be ignored just long enough for me to go out of lemon law range and they'll say it's not a warranty item.

Lemon Law thoughts:
I really really really don't want to lemon law this thing, but this will be the 4th time back in the shop for this same problem, 5th overall. In my state, after 2 repair attempts for the same problem, I can send a demand letter and if they don't fix it after the 3rd time, it's a lemon. I bet Volvo will try to claim that they didn't try to fix it, no repair attempt was made. It feels like an easy argument, I gave them the opportunity to fix it. Claiming ignorance or an inability to fix a "known problem" on their product should not reasonably exempt them from the lemon law, otherwise after the 2nd try they just say they don't know how to fix to get out of it.

Also, sadly after only 5 weeks of ownership, today (Saturday) will be my 11th day that the SUV will be in the shop, and I probably won't get it back until Monday, so I'll be at day 13 already. My state has vehicles be lemon qualified after 20 days in the shop due to defect/problem, regardless of how many times they tried to fix each.

Hey, and on the bright side, so far my 4 loaners have been an XC90 B6 (same one twice), an XC60 B6, and an XC40 B6 (I think) all with under 700 miles on them. None were plug ins. The XC90 T8 drives sooooo much better than any of the loaners. There's zero comparison between the XC90 B6 and T8's acceleration, how they feel and sound at low speeds I wonder what they'll bring me this time, maybe a s90 to toy around in. I should start leaving notes to see if other XC90 T8 drivers are in the loaner for the same problem

Not gonna lie, Boxy, that sucks. So I followed back up with my dealer for more info on my check engine light and they said that there was “Not an error but a warning” whatever that means, and said there was no code. I find that hard to believe but am not really interested in arguing with them.

I have been following their weird advice of locking the car at night while charging. Weirdly, I have also had maybe two more brief check engine lights. Both resolved on their own.

Im going to get an OBD reader and hopefully start being able to do my own insta-diagnostic.

Sorry you’re having a rough go of it. I agree with most of your points here but in my experience (not with Volvo), even if you knew EXACTLY what the issue was, the dealer isn’t going to fix it unless the steps in their repair book lead them to the exact same conclusion. So I would say don’t sweat it any more than you have to and just trust the system (cause what else can you really do?).

At this point hopefully you can hit the 20 days and easily get some resolution with your lemon law. I agree with you on the car though, I love my T8 and I hope you’re able to come to an amicable conclusion.

 

[capndavey]

Our 22.5 has thrown check engine lights pretty much any time it gets cold soaked below freezing. The dealer told us it was the on board charger and that they’d updated the software so it wouldn’t do it anymore. And then it did it again. This time they told me code PO4F0 was popping up. We’ll see if the latest reset fixed it or not…