U0412 code: Invalid Data Received From Battery Energy Control Module A

Code U0412 is named in 13 US owner complaints. Models: 2, model years 2017–2021.

There is little data for this code or its meaning is ambiguous, so this page is not indexed.

What the code means

Invalid Data Received From Battery Energy Control Module A. Generic meaning per SAE J2012 (the same for all makes).

How to read U0412: the letter U means network communication between modules; the second digit 0 marks a generic SAE code shared by all makes; the last three characters 412 identify the specific fault.

Codes for engine, transmission, transfer case and hybrid system modules. When valuing an auction car the key question is whether the fault is crash related (cut wiring, damaged radiator) or a known defect of the model.

Key figures

Complaints with this code: 13
Models: 2
Model years: 2017–2021

Which models and years

Models whose owners name this code (2). Years link to the model year problems page.

Model	Years	Complaints
Chrysler Pacifica	2017, 2018, 2019, 2021	12
Jeep Wrangler	2019	1

Components named together with the code

Component as the owner filed it (one complaint can list several).

Electrical system 9
Powertrain 4
Engine 3
Fuel/propulsion system 3
Forward collision avoidance 1
Service brakes 1
Other 1
Vehicle speed control 1

Complaints by model year

2017 2
2018 6
2019 4
2021 1

What to do if an auction car has this code

Separate crash damage (wiring, radiator, mounts) from known model defects: see the model year problems page.

What owners report

Excerpts of owner complaints in the original wording. Owner statements not verified by the regulator; personal data removed.

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).
Chrysler Pacifica 2017 · 2026-10
Check engine light was on. 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.
Chrysler Pacifica 2019 · 2026-08
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.
Chrysler Pacifica 2018 · 2025-11

Sources: public official US data (owner complaints) and the SAE J2012 standard. Complaints are owner statements not verified by the regulator. A code from a complaint does not replace a scan tool diagnosis. Data updated 2026-11-10.