U0110Lost Communication With Drive Motor Control Module A
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- U0110 means drive motor control module A, the power electronics running the electric traction motor of a hybrid or EV, has stopped talking. Audi's TSB 2065538/1 (Q5 and A7 PHEV, 2019–2021) finds U011000 in the transmission controller after a brief 12 V dip trips the low-voltage monitor; a full bus sleep of about 20 minutes plus clearing codes cures it. Mazda bulletin 09-027-26 (CX-70/CX-90 PHEV) sees U0110 with U0100, U0115 and P0AB9 when water corrodes connector 3002-411 and READY fails in the cold. GM's 2025 gateway table sets it as Type B over two trips once a monitored frame lags 2.5 times its cycle across 6.5 s. Toyota flagged it on the 2017–2019 Highlander Hybrid. Expect no READY, red warnings or limp mode.
- What you may notice
- Vehicle does not enter READY or will not start
- Red drive-system or electrical warning
- Electric drive unavailable, limp mode
- Likely causes
- Likely12 V battery weak or voltage dip, inverter electronics drop off the bus
- PossibleWater or corrosion in high- or low-voltage connectors of the drive system
- PossibleDamaged CAN lines to the inverter
- RareDrive motor control module internally faulty
- 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: €80 – €3,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.