C0915Active Roll Stabilisation Front Actuator Circuit
- Generic OBD-II code · Chassis
- Can trigger limp mode
- How the car detects it
- No list, bulletin or manual shows C0915 in use; the NHTSA index only matches unrelated BMW document numbers. The title names the front actuator of active roll control, which splits the anti-roll bar and twists its halves against each other to hold the body level in bends and to decouple them on rough roads. Schaeffler's 48 V design for the Audi SQ7 front axle drives this with a brushless motor and a three-stage planetary gearbox, up to about 30 degrees of twist and 850-1200 Nm; ZF quotes up to 1400 Nm. A circuit fault concerns motor or sensor wiring between actuator and control unit. Audi's Q7/Q8 family logs control unit faults as C129700 at addresses 00D4/00D5, while Land Rover's older hydraulic system used C1119 and needed bleeding.
- What you may notice
- Suspension or roll stabilisation warning
- Noticeably more body lean in corners
- Likely causes
- LikelyDamaged plug or harness at the front stabiliser actuator
- PossibleActuator motor or internal sensor failed
- RareFault in the 48 V supply feeding the actuator
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €200 – €3,500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.