U011ELost Communication With Throttle Actuator B Control Module
- Generic OBD-II code · Network
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- How the car detects it
- U011E reports that the controller for throttle actuator B has gone silent. Most engines use a single electronic throttle whose motor the engine controller drives itself; a separately housed throttle controller is covered by U0107. SAE reserves B for a second actuator with its own bus-connected driver, but which production engines use one is not documented, and no manufacturer describes U011E publicly. CARB's rule for separate lack-of-communication codes is the formal basis. If control of an electronic throttle is lost, springs return the plate to a fixed limp-home opening that allows only slow driving. Software incompatibility with a throttle controller is U0308, invalid data U0408. Expect MIL, reduced power and possibly an idle-only engine.
- What you may notice
- MIL on
- Limp-home mode with reduced power
- Poor throttle response or idle only
- Likely causes
- LikelyThrottle B controller without power or ground
- PossibleDamaged CAN wiring or connector to the controller
- RareThrottle actuator B control module internally faulty
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Medium · Usually a job for a workshop.Typical cost: €100 – €1,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.