U02A0Invalid Data Received From Hybrid/EV Battery Interface Control Module D
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- Although it sits among lost-communication codes, U02A0 is a data error code. The expected slot in the invalid-data series, U04A4, had already gone to particulate matter sensor A, as Ford's 2014 code list and Volkswagen's 2014 Touareg data show, so module D's data fault landed here. Interface modules are the boards in the high-voltage pack that read cell voltages and temperatures and switch cell balancing for the battery controller; GM's 2016 hybrid tables show eight of them, A to H, on a daisy-chained serial link, with a processor test and a balancing test for each board (P1EA0 and P1EA4 for D). U02A0 means module D still answers, but its data fail integrity or plausibility checks. No manufacturer documents U02A0 publicly. A silent D is U01A3. Expect a power limit.
- What you may notice
- Hybrid or electric system warning
- Reduced power or no charging
- Engine runs more often on hybrids
- Likely causes
- PossibleInterface board D delivering corrupted or implausible data
- PossiblePoor contact in the internal communication chain of the pack
- PossibleMismatched software between battery controller and interface modules
- RareDamaged cell sense lead at module D
- 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: €100 – €3,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.