U042DInvalid Data Received From Active Vibration Control Module
- Generic OBD-II code · Network
- How the car detects it
- The active vibration control module drives active engine mounts or inertial actuators that push against engine vibration in counter-phase, useful with cylinder deactivation. It needs engine speed and other data from the bus and reports its own status back. U042D says a partner receives its frames but finds them invalid. No manufacturer documents U042D publicly. Honda's patent US 10,360,893 describes such a controller that adapts its cancelling output by adaptive filtering and also reads vehicle speed, blower air volume and window state. Bentley shows it is a separate box: fitting newer mounts on a 2017-2020 Bentayga calls for a new program or a new controller for the active mounts, since the old software does not suit them (2055760/1). U012C is lost contact. Expect more vibration; no MIL.
- What you may notice
- Noticeable vibration or humming at idle
- More body vibration when cylinders are deactivated
- Likely causes
- PossibleControl unit software not matching replaced mounts or actuators
- PossibleActive vibration control module faulty
- RareLow supply voltage or poor connection at the module
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €60 – €1,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.