U04B0Invalid Data Received From Hybrid/EV Battery Interface Control Module P
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- U04B0 closes the series: interface module P is the sixteenth and last letter the code lists provide for these boards, with U01AF for lost contact and U0349 for a software mismatch. Packs with more than sixteen monitored sections do exist, such as Ultium batteries with up to 24 modules, so either several modules share one board or the maker uses its own codes beyond P; which applies is not published. The next code, U04B1, already belongs to a different device, the battery monitor module. As with the other letters, U04B0 means the battery controller receives P's messages but finds their content unusable, which leads to power limits and a warning. No manufacturer documents U04B0 publicly.
- What you may notice
- High-voltage system warning
- Power and charging limited
- Likely causes
- PossibleInterface control module P faulty
- PossibleContact fault on the internal link to module P
- RareBattery controller software misreading module P
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €200 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.