Invalid Data Received From Battery Energy Control Module A

Under safety recall 73B, for which I had the software update done last year (nothing noted by the dealer). I have since had intermittent check engine light issues, and even had the vehicle completely shut off last winter for 10 minutes in the middle of the road. It subsequently turned on, and when brought in I was told there were no "current codes" in the system to investigate. I've now had check engine light on steady for a couple months. There are historical codes U029A-00 (lost communication with hybrid battery pack sensor module), U0412-00 (invalid data received from battery energy control module A), and current code P1D43-00 (internal control module shut off test monitoring time error)…

The 48-Volt Lithium-Ion eTorque Hybrid Battery Pack (Mopar Power Pack Unit/PPU) on my 2019 Jeep Wrangler Sahara Unlimited (~55K miles) failed. The failed component may be available on video by the dealership. Check engine light first appeared early XXX. Earliest dealership appointment was late August 2026. At that visit, dealer diagnosed DTCs P0A94 (recurring, including P0A94-03) and U0412, and performed a software update flashing the BPCM (Battery Pack Control Module) firmware from 05057870AN to 05057870AV per a Technical Service Bulletin. This was covered under warranty at no charge; vehicle was returned to me. Days later, the check engine light returned along with a battery warning light…

…I pulled 2 codes U0412 and U029a. I have had the U0412 code a few times before with only the check engine light coming on. It would go away in a day or two (no check engine light and no code). U029a is new.

The manufacturer's mandatory 73B Safety Recall update (Vehicle Fires) creates a critical software-induced communication failure on the central vehicle network. Following the 73B flash, the vehicle developed an Active SGW U0001-00 CAN C Bus network fault, which permanently blocks data transmission and triggers an HCP U0412 hybrid battery fault. This network crash disables the hybrid propulsion systems, creating an unpredictable and hazardous driving condition. The manufacturer (Stellantis) and its authorized dealer (Seattle Jeep) are refusing to remedy this safety recall side effect under the vehicle's Hybrid Powertrain Warranty, instead forcing consumers to pay out-of-pocket diagnostic fees…

…Diagnostic trouble codes were present related to the hybrid system and high-voltage battery, including P1D43, P1A21, U029A, and U0412. These codes indicate faults in the hybrid control system and battery communication. A Chrysler service department inspected the vehicle, confirmed the trouble codes, and returned it to me without repair because the issue was not immediately reproducible at the dealership. The vehicle has a history of similar intermittent issues, including prior loss-of-power events and repeated service visits for hybrid system faults. The condition is not consistently reproducible, but when it occurs it results in a sudden loss of motive power while driving. This creates a…

I had the recall for 73B performed in mid October to my 2017 EV/Hybrid Pacifica- 2017 and only 67K miles. No issues before. Since the recall service I’ve brought it in twice with the same problems stating Hybrid Battery needs conditioning/service. I suspect it’s the recall update that has caused all types of issues. I did go to auto zone before I brought the vehicle in just this Monday to get the codes. U0412, P1A29, P0A7F- invalid Data received from Battery energy control Module A - Lost communication with Hybrid Battery Pack Sensor Module- A Deterioration. If you google 73B recall service problems on Chrysler Pacifica - the following appears: Failure to charge and engine light: Some owners…

After safety recall 73B was performed on my 2018 Chrysler Pacifica Hybrid on 11/24/25, the vehicle's check engine light illuminated. Code U0412 is identified as a 'stored' code upon pulling OBD information. This is described as "Invalid Data Received From Battery Energy Control Module 'A'" indicating failure of the high voltage battery pack and its control system. The HV battery is available for inspection upon request. My safety and the safety of others are at risk because the recall was issued to prevent a battery fire. The symptoms my vehicle is exhibiting are precisely the kinds of faults the recall's software update is supposed to detect. The check engine light, appeared within days of…

During normal driving from office to home car suddenly started stuttering and I was apply break but speeded up and showed engine light on, I was about to hit front car due to additional speed. During that time I saw few quick messages on the dashboard, the one that I can remember was related with ACC. That's the dangerous situation. I looked d from OBD and found that code was U0412 and reported that code to Huntington Beach Chrysler service station. Please keep an eye out for some similarities between others reports.

The battery of my hybrid electric minivan was damaged during a recent factory recall, and Chrysler is refusing to correct the problem. Instead, they’re trying to charge me for a new battery. Here’s the background. I recently received a recall notice (73B) for my 2018 Chrysler Pacifica hybrid minivan that warned of a possible vehicle fire. I was advised not to recharge the van and to park outside and away from structures. In January, I took the van to Russ Darrow Chrysler in the Milwaukee Auto Mall to address the issue. The check engine light came on shortly after the recall work was complete (trouble codes U0412 and P0BBE). I took the van back to the dealership as soon as possible. I was…

After safety recall 73B was performed on my 2018 Chrysler Pacifica Hybrid on 02/03/2025, the vehicle's check engine light illuminated and it began experiencing charging failures. The component that has failed is the high-voltage (HV) battery pack and its control system. Diagnostic scans performed by a Chrysler dealer on [Date of diagnosis] confirmed trouble codes, including U0412, which indicate a critical fault within the battery system. The HV battery is available for inspection upon request. My safety and the safety of others are at risk because the recall was issued to prevent a battery fire. The symptoms my vehicle is exhibiting are precisely the kinds of faults the recall's software…