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Discussion Starter · #1 · (Edited)
Recorded for reference:


While driving with over 20 mile for electric range the car decides to cut all propulsion and heating. The dash reported charging system failure and to switch the car to park.
I managed to coast from the furthest left lane to the the curb lane as traffic was pretty tame so early in the morning. any other time I would be stuck in the fast lane.

I called for tow as I could no longer move the car. While waiting for tow the car reset itself (about 15min from incident) and I was able to drive to the closest dealer. The dealer noted a code for Motor A position error.
I also noticed that right before the failure the car was making a growling sound from the electric motor. It sounded like the motor was overloaded but i was going down a hill with little power usage. The growling sound was most likely while regenerating energy .

I am now without a car for the third time on this car
First time the heater failed at 9800 miles discussed here : 2021 PHEV heater failure at 9800K
2nd time was exact same issue while driving on gas motor - getting to stop sign with same issue. - no propulsion and growl and put in park messages. ....
3rd time while on HW.
 

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Thanks for sharing. It is helpful to see what is possible in the PacHy, in case it ever happens to anyone else.

First thing to try with ANY electronic failure/lock up is to shut down, wait a bit, then restart. Glad to hear that even worked on your PacHy. Keep us updated on what you find out.
 

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Discussion Starter · #3 · (Edited)
Thanks for sharing. It is helpful to see what is possible in the PacHy, in case it ever happens to anyone else.

First thing to try with ANY electronic failure/lock up is to shut down, wait a bit, then restart. Glad to hear that even worked on your PacHy. Keep us updated on what you find out.
Had this happen once before. What works without waiting is to disconnect the 12V battery for about 30s. This will get u back on the road again but in my case reset the error code on dash. This time I wanted the dealer to get the codes (I am sure it did store it in the history codes but dealer didn't mention it with previous experience) This seems to be related to code P0A43 as seem by others. Usually requiring tranny replacement..... Hope that the dealer will fix my issue.

I still like my car but I don't want a Car that sits in a shop .... that's a lemon in my opinion. Probably best to figure out lemon laws in my state. Heater failure took about 4 weeks in the shop. Last time it had the same error it was in the shop for 4 days. ...

When this happened the last time the dealer updated firmware, but if the hardware is broken a firmware will not help. As proven by event 2 .... Hope the dealer can figure this out. My main gripe is that the dealers do not have loaner cars.... I am paying for my car and cant use it.
 

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Others have reported with "Motor A position error " had to have the transaxle replaced. Several reported dealers replacing the PIM first did NOT fix the issue until the replacement of the transaxle was completed.

Glad I have had no issues with my previous 2018 and current 2021 other than the need for multiple software updates over time for the PCM, HCP and AHCP.
 

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Discussion Starter · #5 ·
Others have reported with "Motor A position error " had to have the transaxle replaced. Several reported dealers replacing the PIM first did NOT fix the issue until the replacement of the transaxle was completed.

Glad I have had no issues with my previous 2018 and current 2021 other than the need for multiple software updates over time for the PCM, HCP and AHCP.
Had a 2019 without any issues - seems the 2021 has covid .

My battery has been goofy as well not sure if the 2 are related but it could be. The battery has been reporting 35 miles of range then it would go down by 10 miles after traveling 3 miles. Maybe motor A issues are casing this as well but not sure. ... might be a separate issue altogether.
 

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My 21 is at dealer waiting engineers evaluation. Same exact problem as yours. 11,300 miles. Now I'm driving a Ram 1500 4x4 Hemi gas hog loaner.
Make sure you file complaint with NHTSA as they are officially investigating this issue.
 

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Discussion Starter · #7 ·
My 21 is at dealer waiting engineers evaluation. Same exact problem as yours. 11,300 miles. Now I'm driving a Ram 1500 4x4 Hemi gas hog loaner.
Make sure you file complaint with NHTSA as they are officially investigating this issue.
My 21 has 17170 miles and has had this same issue 2 months ago - software was updated and was supposed to fix it. I did file a complaint both times. I don't have a replacement car yet . Dealers here say they are out for next 2 weeks.

Will file for rental car with Chrysler Cares..........
 

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Discussion Starter · #9 ·
My 21 has 17170 miles and has had this same issue 2 months ago - software was updated and was supposed to fix it. I did file a complaint both times. I don't have a replacement car yet . Dealers here say they are out for next 2 weeks.

Will file for rental car with Chrysler Cares..........
October 26 2022 update
Been driving a dealer car for some time - Now awaiting new transmission which the motor A and Motor B live in. That is approved for replacement.
hopefully nothing else gets broken in the process.
 

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This just happened to us today. Our car is a 2022 Pinnacle with under 1000 miles on it! Barely a month old!

We didn't make a video, but same thing. driving and then car suddenly died. blinking lights when in D and everything. Luckily was able to get it back on by turning car off, opening the driver door to 'turn the car off' off. and closing it and restarting the car. Just got the Uconnect health report as well, and am seeing these errors reported.

Going to take the car to the dealer tomorrow to see what's going on. Can't have this car randomly turn off with two kids inside on a busy highway/road.
Font Number Screenshot Document Parallel
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This just happened to us today. Our car is a 2022 Pinnacle with under 1000 miles on it! Barely a month old!

We didn't make a video, but same thing. driving and then car suddenly died. blinking lights when in D and everything. Luckily was able to get it back on by turning car off, opening the driver door to 'turn the car off' off. and closing it and restarting the car. Just got the Uconnect health report as well, and am seeing these errors reported.

Going to take the car to the dealer tomorrow to see what's going on. Can't have this car randomly turn off with two kids inside on a busy highway/road.
View attachment 51580 View attachment 51581
Be sure to report what happened to NHTSA.
 

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Recorded for reference:


While driving with over 20 mile for electric range the car decides to cut all propulsion and heating. The dash reported charging system failure and to switch the car to park.
I managed to coast from the furthest left lane to the the curb lane as traffic was pretty tame so early in the morning. any other time I would be stuck in the fast lane.

I called for tow as I could no longer move the car. While waiting for tow the car reset itself (about 15min from incident) and I was able to drive to the closest dealer. The dealer noted a code for Motor A position error.
I also noticed that right before the failure the car was making a growling sound from the electric motor. It sounded like the motor was overloaded but i was going down a hill with little power usage. The growling sound was most likely while regenerating energy .

I am now without a car for the third time on this car
First time the heater failed at 9800 miles discussed here : 2021 PHEV heater failure at 9800K
2nd time was exact same issue while driving on gas motor - getting to stop sign with same issue. - no propulsion and growl and put in park messages. ....
3rd time while on HW.
Please report what happened to NHTSA
 

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Discussion Starter · #14 ·
A small update :
I have my car back with new tranny. I am not 100% sure its fixed yet. The battery has been erratic in estimating remaining capacity since last July and I was hoping it was related to the motor A/B failure in the tranny. At this point my car has 18500 miles and the battery range has gone from 32 miles when new to sometimes as low as 20 miles in one trip. This drives me nuts. I mentioned this to my service dealer and he told me I should get a lawyer specializing in Lemon law.
I know the battery is under warranty but I don't want to deal with such crap and have my car in service more than actually driving it. Right now I am driving it and recording the battery status with my phone to document the issue.
I have tons of pictures of the erratic battery estimations that sometimes start at 38 miles when charged and go down by 4.....8 miles within the first 2 miles and keep going down as I drive sometimes providing only 20 miles of range (sometimes up to 26). BTW I have a light foot.
 

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So this is interesting:

Remedy is a PIM and IPC software update for 2017-2018 model year vehicles and a PIM software update for 2019-2023 model year vehicles providing messaging to the customer and sufficient drive time to exit traffic

So the update wont actually fix the problem, just prevent the shutdown.

the bad parts are:

Component Name 1 : Harness Assembly Component Description : Low Voltage Wiring Component Part Number : 05062444AI / 05062444AH / 05062444AG / 05062444AF / 05062444AE
Component Name 2 : Harness Assembly Component Description : Low Voltage Wiring Component Part Number : 05062444AD / 05062444AC / 05062444AB / 05062444AA

So to me they are going to have to crack open every one of our transmissions once they design a new wiring harness.

This is bad, really bad.
 

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So to me they are going to have to crack open every one of our transmissions once they design a new wiring harness.

This is bad, really bad.
Before you jump to conclusions, we'd have to see exactly where this part is.

The transmission is actually bolted to the side of the engine and the power inverter module (PIM) is at the top, you can see it from the engine bay, with the orange wires.

If the faulty connection is in the PIM, then it's less intrusive than you think.
 
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Hey everyone, factory tech here whose personally diagnosed these a decent amount of times this year.

To keep it simple the A drive motor has three resolvers: sin, cos, and excitement. In all cases I’ve seen, the cos resolver is shorting to the transmission case and causing a short to ground condition. It is either intermittent, and will cause a random stall, or shorts in such a way that you can instantly see it on a DMM and the vehicle won’t start and the code will be active

I believe the above poster is right is condemning the internal harness as faulty. It’s probably bad routing or some such.

I don’t see how a flash will solve this unless the flash is just to prevent the immediate stall condition. The problem isn’t common, but I do get about one of these a month coming into the shop and this is in socal with a **** high amount of hybrids on the road.

They might just send the recall flash and deal with the transmission failures as they come as they aren’t exactly common. The trans is covered under the 10 yr/150k mile hybrid warranty


Also, for those concerned with the dealers replacing the PIM, the reason for that is if the short isn’t present during testing the diagnostic flow chart leads to the replacement of the PIM. The first two I had we replaced the PIM first before replacing the transmission. Now when you go to make a Star case to order a PIM the star center will just tell you it’s the transmission and order that first to avoid that waste of time
 

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So to me they are going to have to crack open every one of our transmissions once they design a new wiring harness.
It seems highly unlikely that they are going to fix every transmission out there. They will just fix the ones that break. From a regulatory standpoint the safety issue was the sudden loss of power at high speed. The software update will apparently prevent that loss of power, allowing for the owner to pull over safely when able. and then you'll get a new transmission. I don't expect Chrysler is about to crack open over 67,000 hybrid transaxles. If the defect becomes more common then NHTSA could order something like that, but it doesn't seem likely at this point.
 

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Hey everyone, factory tech here whose personally diagnosed these a decent amount of times this year.

To keep it simple the A drive motor has three resolvers: sin, cos, and excitement. In all cases I’ve seen, the cos resolver is shorting to the transmission case and causing a short to ground condition. It is either intermittent, and will cause a random stall, or shorts in such a way that you can instantly see it on a DMM and the vehicle won’t start and the code will be active
For those wondering, the part mentioned is here:

YOUTUBE

As an engineer I'd guess the part that fails is that in-line SIP wire connector. It looks like the part is meant to be protected against failure by that robust bracketing system, but I'd guess that plastic cracks due to the lateral stress on the connector (or maybe people are swinging it around by the wire harness at the factory).


The resolver is the electric motor equivalent to a crankshaft position sensor. Essentially the vehicle is shutting down because the sensor goes faulty and the vehicle doesn't know the position of the motors / how fast they are spinning, which could lead to fighting between the motors (burn out the PIM) or fighting with the engine.

I'm guessing the software update allows everything to keep working for a limited amount of time if such an error occurs since there's nothing physically keeping from the motors working, just if the drivetrain gets too out of sync it can lead to damage.
 
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