U033ESoftware Incompatibility With Hybrid/EV Battery Interface Control Module E
- Generic OBD-II code · Network
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- A fifth interface board exists, for example, in BMW's 330e plug-in hybrid of the F30 series: bulletin SI B61 25 17 lists voltage-measurement codes for cell supervision circuits 1 to 5 in the battery electronics SME, under BMW's own numbers 21F0C2 to 21F0C6. BMW replaces a CSC only if the fault is active, has been logged five times, or twice with the MIL lit, and once harness and cell voltages have been checked. Kia shows why software has to follow such parts: on the 2015–2017 Soul EV, a replaced battery pack or BMS may need a BMS update chosen by the installed part numbers and confirmed by ROM ID (TSB ELE 155). U033E would flag a fifth board whose software the master rejects; U01A4 and U04A5 cover silence and bad data.
- What you may notice
- Powertrain or hybrid warning, MIL possible on plug-in hybrids
- Fault stored after a battery or BMS repair
- Electric range or power temporarily limited
- Likely causes
- LikelyFifth supervision board replaced without matching the controller software
- PossibleBattery controller not updated to the part numbers now installed
- RareBoards of different production levels combined in one pack
- Inspection (ITP)
- Can matter for the ITP: it concerns the emissions system.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €60 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.