Model 3 NCA to LFP issues
Posted: Wed Mar 25, 2026 2:20 pm
I know this probably isn’t the kind of question usually asked here, but I could really use some help from those here who are far more knowledgeable about this stuff than I am.
I recently swapped out a failing standard range NCA pack for a LFP pack. The car is a 2021 the the battery was out of a 2023. My issue is it keeps failing the battery replacement sequence after the can redeploy. It won’t reset the battery range life model, and shows a dir_a144_config mismatch fault. I’m stuck in turtle mode and there is next to nothing out there as far as information goes. I did also make sure the mass deviation was set to the new CATL battery.
What am I missing?
I would appreciate any help.
Thanks!
I recently swapped out a failing standard range NCA pack for a LFP pack. The car is a 2021 the the battery was out of a 2023. My issue is it keeps failing the battery replacement sequence after the can redeploy. It won’t reset the battery range life model, and shows a dir_a144_config mismatch fault. I’m stuck in turtle mode and there is next to nothing out there as far as information goes. I did also make sure the mass deviation was set to the new CATL battery.
What am I missing?
I would appreciate any help.
Thanks!