U0341 code meaning
Software Incompatibility With Hybrid/EV Battery Interface Control Module H
What U0341 means
Packs with eight boards end at H. Besides GM's 2016–2019 plug-ins, BMW's i3 is one: bulletin SI B61 02 16 lists eight cell supervision circuits for the i3 battery and, for boards built between December 2013 and September 2014, orders all of them renewed together once diagnosis calls for a CSC. When only one section of a pack is changed, GM adds a step for Volt and ELR: per PIC6097A the new section must be balanced to the rest with the EL 50332 service tool, using interface VIM-1 for the 2011–2015 Volt and 2014–2016 ELR and VIM-2 for the 2016–2019 Volt, with the tool itself updated first. Matching generations matter at every step. U01A7 and U04A8 are H's lost-contact and invalid-data codes.
U0341 at a glance
- Check engine lightUsually not
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 4 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0341
- Car cannot be made ready to drive
- Code set after battery section work
- Drive power reduced
Common causes of U0341
- Most likelySoftware of the last board does not match after a section replacement
- PossibleOnly some boards renewed where the maker requires a complete set
- Less likelyService tool, adapter or tool software of the wrong generation used
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Hv battery interface module h
What each part of U0341 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 41 | The exact fault in that area. |
What to do next
- Note U0341 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U0341
What does U0341 mean?
U0341 means "Software Incompatibility With Hybrid/EV Battery Interface Control Module H". Packs with eight boards end at H. It is a generic code, so it means the same on every make.
Is it safe to drive with U0341?
Drive gently and only to a workshop. With U0341 the car can go into limp mode (reduced power) to protect itself.
Will U0341 fail an emissions test?
Yes, it can. U0341 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is U0341 to fix?
Difficulty: workshop only. A typical repair takes 1 to 4 hours of work. This is a job for a workshop.
Will U0341 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.