[r3d3nvy]

Two things, If you haven't already, I'd clear the codes and see if they come back. Those "I think" will occur when the antenna has been unplugged from the back of the radio and powered up while unplugged. If I remember correctly, the WiFi and Bluetooth share a connector on the back which is Teal/Aqua Marine in color.

I haven't cleared it yet and they were still present the last time I scanned it. I was waiting to see if they might clear themselves over a few cycle since I wanted to make sure it was there if the U0412 showed up and I had to take it back for service. Since it only showed up after the recall was performed. I haven't did anything with regards to the antenna so it shouldn't have happened. I never had these error codes prior to the recall as I would periodically scan the vehicle to make sure the only one I would have is typically the radio ntsc video issue. I have a trip next week so if no issues from the recall then I'll likely clear the code to see if it comes back.

I just bought a 2018 Pacifica Hybrid at an auction in Canada, but I'm starting to wonder if it was a good decision. Additionally, the car went through recall 73B in January. Is there anyone in the group who hasn't encountered any errors after the service action, or anyone who had their battery replaced as part of the recall?

I'll give an update to my vehicle as I been following this thread since the beginning. I had the recall done on my 2018 with ~31500 (at the time) done on Feb 17th. As of today with about ~32240 miles, I haven't seen the U0412 code yet. Just those other ones mentioned prior. Mileage-wise I have not driven it as much as I thought I wouldve in the last month, but I have a trip next week that will put over 500 miles on it so that will let me know if everything is okay or not. If it's okay, I plan to clear the code and see if the others code comes back or not. If a new code or something appears then at least when I take it back to the dealer they will see all the codes there. I have charged it normally over the last month.

Current mileage after Recall: ~740 miles
EV Range: ~32miles per charge
Charging Pattern:
- Overnight 120v charge at 12amp (utilizing a charge that my other vehicle uses). Normal
- Have charged outside twice at 240v. Normal
- Remote start working as normal in the morning to warm up the car. Normal
Weather here in So Cali: Overnight low has been in the low 50s F and high around the 70s F
Been checking weekly since the recall to see if any CEL pops.
As mentioned just the B156F-00 (Wifi Antenna) and B1434-13 (Bluetooth Antenna-Circuit Open) were new and not there prior to the recall.

Will be taking the vehicle on a trip end of next week so that will push the mileage as some mentioned in their post that it appears to show up after X amount of miles. I'll post an update after that trip.

 

[focus30]

I haven't cleared it yet and they were still present the last time I scanned it. I was waiting to see if they might clear themselves over a few cycle since I wanted to make sure it was there if the U0412 showed up and I had to take it back for service. Since it only showed up after the recall was performed. I haven't did anything with regards to the antenna so it shouldn't have happened. I never had these error codes prior to the recall as I would periodically scan the vehicle to make sure the only one I would have is typically the radio ntsc video issue. I have a trip next week so if no issues from the recall then I'll likely clear the code to see if it comes back.


I'll give an update to my vehicle as I been following this thread since the beginning. I had the recall done on my 2018 with ~31500 (at the time) done on Feb 17th. As of today with about ~32240 miles, I haven't seen the U0412 code yet. Just those other ones mentioned prior. Mileage-wise I have not driven it as much as I thought I wouldve in the last month, but I have a trip next week that will put over 500 miles on it so that will let me know if everything is okay or not. If it's okay, I plan to clear the code and see if the others code comes back or not. If a new code or something appears then at least when I take it back to the dealer they will see all the codes there. I have charged it normally over the last month.

Current mileage after Recall: ~740 miles
EV Range: ~32miles per charge
Charging Pattern:
- Overnight 120v charge at 12amp (utilizing a charge that my other vehicle uses). Normal
- Have charged outside twice at 240v. Normal
- Remote start working as normal in the morning to warm up the car. Normal
Weather here in So Cali: Overnight low has been in the low 50s F and high around the 70s F
Been checking weekly since the recall to see if any CEL pops.
As mentioned just the B156F-00 (Wifi Antenna) and B1434-13 (Bluetooth Antenna-Circuit Open) were new and not there prior to the recall.

Will be taking the vehicle on a trip end of next week so that will push the mileage as some mentioned in their post that it appears to show up after X amount of miles. I'll post an update after that trip.

Thanks for reply. Has your car passed all the previous recalls as listed below?

 

[r3d3nvy]

Thanks for reply. Has your car passed all the previous recalls as listed below?




View attachment 59531

Correct. My vehicle is up to date with all recalls. On the first recall version for this (03A) it took them 3 weeks before I had my vehicle back. They would perform the recall and it wouldn't move on. They opened up a star case and found that the hvac door blender was keeping the computer up instead of sleeping so I had to pay my deductible for warranty to replace that part after which recall was performed and vehicle returned.

As @SitKneelBend mentioned in his post, that got me thinking is since more so the 2018 are also experiencing a failing canbus connector due to age that that could possibly play a role in the issue. I replaced my star connector last summer due to it failing. Thought-wise is what if the recall was performed and it had a failing canbus connector, recall software might as @SitKneelBend mentioned not properly update. Which might be the reason when some mentioned they had their recall done again it "took". But this might be contradicted since @ThisSuckersElectrical's 2018 had the U0412 show up, but I haven't confirmed if that canbus was replaced. @ThisSuckersElectrical for the 2018, the star connector was replaced before right? Also, hows that vehicle now?

@focus30 I would definitely recommend being pro-active if you start seeing random things and U codes show up. It means that star connector is going or gone. You might see some small random things here and there or it could just leave you stranded. I still carry a spare, but every 5-6 years now I just plan on checking it or replacing it. I definitely dont want to get stranded.

 

[yrag.neslo]

Add me to the list. 2018 just threw U0412 today.

 

[Lander92]

In my case, I have the car parked in the garage, unable to use it because they don’t know what’s wrong with it. I’ve tried to fix the problem myself, but I’m not knowledgeable. I took it to Chrysler to have it checked, they charged me, and in the end, they still don’t know what’s wrong. I haven’t picked it up because I still don’t know what the issue is. I wish I could pay whatever it takes just to solve the problem. The issue remains the same: when I start the car, the dashboard goes crazy, it starts showing errors, and the gear shift button gets stuck.

 

[r3d3nvy]

In my case, I have the car parked in the garage, unable to use it because they don’t know what’s wrong with it. I’ve tried to fix the problem myself, but I’m not knowledgeable. I took it to Chrysler to have it checked, they charged me, and in the end, they still don’t know what’s wrong. I haven’t picked it up because I still don’t know what the issue is. I wish I could pay whatever it takes just to solve the problem. The issue remains the same: when I start the car, the dashboard goes crazy, it starts showing errors, and the gear shift button gets stuck.

From your signature, you have a gas version and this is thread is for hybrid with the U0412 code. But my suggestion is to take a look at the canbus since you mentioned the dash goes crazy and the shift button is stuck. Also, have you changed the 12v battery out? Both batteries since you have a gas.

 

[SitKneelBend]

From your signature, you have a gas version and this is thread is for hybrid with the U0412 code. But my suggestion is to take a look at the canbus since you mentioned the dash goes crazy and the shift button is stuck. Also, have you changed the 12v battery out? Both batteries since you have a gas.

That or the 12v Battery (both if stop/start equipped). Everytime the winter killed my truck battery it did the same thing...

 

[Buffrider]

My van threw a U0412 code. The light went out and hasn’t come back on. It has been at the dealership for a month. They check it multiple times a day.

 

[ThisSuckersElectrical]

@ThisSuckersElectrical for the 2018, the star connector was replaced before right? Also, hows that vehicle now?

It was replaced after on 01/28/2025 when it crapped out and died while driving with the instrument cluster flickering and going nuts. It wouldn't move, shift into gear, or start with 60 DTCs, most being "U" loss if communication. After replacing the large star connector, the vehicle has been running great ever since, except for the U0412, which is still randomly coming and going as it was before the total failure of the star connector. The smaller one should probably be replaced as well.

This is what a failed star connector CAN bus looks like for anyone wondering.

 

[coldfire]

My Pacifica started to give U0412 code today, I did have 73B recall in this Jan. My car had stayed with the dealer for more than two weeks to fix the recall.

 

[jbrett]

Our 2019 PacHy was at the dealer for just one day for the recall... I dropped it off on the evening of March 26, and picked it up on the evening of March 27 and drove it home. Charged overnight and drove it on March 28 with no issue.

Today (March 30) the check engine light came on and OBD reports "Confirmed:" U0412 and P1A01, and "Permanent": U0412

We have a pretty good dealer/service team and an extended warranty... but would really prefer to just have the car working properly.

Thank goodness for this forum... such a great resource!


And (edit) the check engine light went off the next day and has not reappeared. We have driven it several times, so maybe, hopefully, a one time glitch.

(Edit...again) Now several weeks into this, and the error code seems to appear on about 1/3 starts, then reappears on the next engine start, then clears the following day. We have been recording OBDLink profile each time. Haven't had a chance to take it into the shop yet, but will have to give them a call to see if there is anything they will do about it. There is little sense taking it in to be told "Yep. You're getting an error code, but we don't know why."

 

[Shakydonut]

Hi, my 2018 Pacifica has been at the dealer for 30 days now trying to get the 73b recall. There was a problem and the dealer started a ticket with the STAR and I haven't heard anything in about a week. What should I be asking since they still have my vehicle for the 73b recall to either avoid a possible u0403 error or not get stuck paying for the fix if/when the error arrives?

 

[r3d3nvy]

Hi, my 2018 Pacifica has been at the dealer for 30 days now trying to get the 73b recall. There was a problem and the dealer started a ticket with the STAR and I haven't heard anything in about a week. What should I be asking since they still have my vehicle for the 73b recall to either avoid a possible u0403 error or not get stuck paying for the fix if/when the error arrives?

Do you happen to know if your vehicle ever had it's star/canbus connector replaced before? Just curious.

 

[Solution4U]

My dealership checked it out (I had the error code after the recall) and they cleared it and said it was "fixed". That was good for about a month or so and now the check engine light is back on. I'll have the code pulled to see if it is the same or different and try to remember to update this thread.

 

[Roc_Pac]

I have a 2018 Pacifica hybrid and got the 73B recall done in January. As I drove the car home from the dealer, there was a check engine light. I took it back to the dealer and they tried to pull the code but said that they couldn't read anything, which didn't make sense to me since I know that these codes get stored, but the code was gone so I drove the vehicle home. Since then we have had two sets of check engine lights. I cleared the first set of codes (I can't remember what they were) and then a couple days ago I took a long drive and got the following codes:
B22A9, U0412, C2200, P0BBE. The B22A9 code is permanent so I can't clear it.

I have not reached out to the dealer or Chrysler cares. I will probably start out with Chrysler Cares and go from there.

Anyone have any recommendations on how to handle this? Has anyone seen drivability issues related to this problem? I have another longer trip coming up and I am concerned about driving the car with a check engine light. The other issues is that the car will no longer charge (I get a message about servicing the charging system) and the remote start fails. Otherwise I have not seen any other issues.

I saw a lot of discussion on this thread about how this issue might be temperature related. I live in Rochester NY and it has been and still is very cold. We are often seeing temps below 32 F.

Thanks

 

[MyFirstChrysler]

I have a 2018 Pacifica hybrid and got the 73B recall done in January. As I drove the car home from the dealer, there was a check engine light. I took it back to the dealer and they tried to pull the code but said that they couldn't read anything, which didn't make sense to me since I know that these codes get stored, but the code was gone so I drove the vehicle home. Since then we have had two sets of check engine lights. I cleared the first set of codes (I can't remember what they were) and then a couple days ago I took a long drive and got the following codes:
B22A9, U0412, C2200, P0BBE. The B22A9 code is permanent so I can't clear it.

I have not reached out to the dealer or Chrysler cares. I will probably start out with Chrysler Cares and go from there.

Anyone have any recommendations on how to handle this? Has anyone seen drivability issues related to this problem? I have another longer trip coming up and I am concerned about driving the car with a check engine light. The other issues is that the car will no longer charge (I get a message about servicing the charging system) and the remote start fails. Otherwise I have not seen any other issues.

I saw a lot of discussion on this thread about how this issue might be temperature related. I live in Rochester NY and it has been and still is very cold. We are often seeing temps below 32 F.

Thanks

I contacted the dealership and advised them of the check engine light and the code. I expressed my concern that this was discussed on this thread and appeared to be directly related to the recall. The dealer had me bring the vehicle in and they are currently in the process of contacting Chrysler about the issue. The Pacifica is still under 8 years and 100k miles so the high voltage warranty is still applicable. It looks like the dealer wants to do the right thing. I am not entirely sure what Chrysler will say is the fix for the problem.

 

[olesam]

Yikes, I wish I had seen this before I dropped my 2018 PHEV at the dealer for the 73B recall today. I only have ~47k miles on it though (lots of local driving).

Interestingly, prior to performing the 73B service, I had the U0412 code come up a month or two ago, after we had parked the vehicle outside for a while (and it saw some sub-freezing temps for a few days)... this also coincided with the oil life indicator going from fairly high (~70%) straight to 0%. I reset it back to 100% and it's been working properly since then.

I tried clearing the codes with my Autel diagnostic tool (I didn't subscribe to AutoAuth, just used the generic DTC scan function) and it seemed to eliminate the check engine light but it came back on again after a few weeks. The codes are shown below in case it's interesting to anyone.

Anyway, we'll see what happens at this recall service! They're also performing the Y40 service, not sure what that's going to do...

 

[olesam]

And perhaps expectedly, the dealer followed up this afternoon to let me know the check engine light (I'm assuming the U0412 and P1A01 codes) is "related to the recall and we cannot fix the recall until the check engine light is addressed". They're telling me it's covered under warranty, so I guess I'm lucky I'm below 100k miles still, but man this sounds like it'd be an expensive nightmare if not for the warranty.

 

[Kayza]

That's interesting. Lots are beyond 100k. Good to know they say it is related to the recall. Perhaps that means they won't give 100k+ drivers the stick.

 

[2018PACHY78132]

An update on my 2018 after 73B done in Jan 2025. I encountered a CEL with DTC U0412, 3 or 4 times after 73B was performed and had never prior to the recall being performed. I was directed by STAR and Chrysler Care to take the vehicle back to the dealer who performed the recall. By the time the TECH got to see the car (4 days later) the CEL had turned off but U0412 was showing as a stored DTC. They had the vehicle for over 3 weeks and drove it about 110 miles trying to trigger the CEL which was unsuccessful. I was told by STAR I need to pick my car up and there is nothing they can do about it because they were unable to replicate the CEL coming back on. My local dealer was very nice and advised me to return immediately when the CEL turns on and not to turn the car off and on when the CEL turns on, since it tends to reset the CEL automatically after several ignition cycles.
As frustrating as it can be, the feeling when we drive the car that the CEL can pop on at anytime is just so painful. I constantly am looking at the dash while driving to make sure I don't miss the CEL turning on! This sounds like a potential class action case if not a LEMON! We are getting ready to find a replacement vehicle if this trouble continues. Our mental health is worth more than the gas savings we get with this van!