U02A8Lost Communication With Engine Sound Control 2
- Generic OBD-II code · Network
- How the car detects it
- A second engine sound control exists where one unit is not enough, for example when interior speakers and an exterior sound source are handled separately or two actuators sit at different points of the body. Active sound design covers both directions: inside it shapes what occupants hear, outside it can give a car a recognisable voice. U02A8 is stored when unit 2 drops off the network while unit 1 may still work. Keep it apart from pedestrian warning sound, which on electric cars has its own legal basis and module. No manufacturer documents U02A8 publicly; Ford, for one, runs its engine sound enhancement inside the audio control module, enabled by software. The fault does not affect driving, emissions or engine control, only the sound picture.
- What you may notice
- Part of the engine sound effect missing
- Code stored without other noticeable effect
- Likely causes
- PossibleFuse, supply or ground of sound unit 2 faulty
- PossibleWater or corrosion at a connector in an exposed mounting point
- PossibleUnit 2 coded as fitted but missing or disabled
- RareSound control unit 2 internally failed
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €800
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.