C0915 code meaning
Active Roll Stabilisation Front Actuator Circuit
What C0915 means
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.
C0915 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor1 to 6 hours
- Clears after repairWhen cleared with a scanner
Symptoms of C0915
- Suspension or roll stabilisation warning
- Noticeably more body lean in corners
Common causes of C0915
- Most likelyDamaged plug or harness at the front stabiliser actuator
- PossibleActuator motor or internal sensor failed
- Less likelyFault in the 48 V supply feeding the actuator
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Roll stabilisation actuator frontRoll stabilisation module
What each part of C0915 means
| C | Chassis system: brakes, ABS, steering and suspension. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 15 | The exact fault in that area. |
What to do next
- Note C0915 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about C0915
What does C0915 mean?
C0915 means "Active Roll Stabilisation Front Actuator Circuit". No list, bulletin or manual shows C0915 in use; the NHTSA index only matches unrelated BMW document numbers. It is a generic code, so it means the same on every make.
Is it safe to drive with C0915?
Drive gently and only to a workshop. With C0915 the car can go into limp mode (reduced power) to protect itself.
Will C0915 fail an emissions test?
C0915 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is C0915 to fix?
Difficulty: workshop only. A typical repair takes 1 to 6 hours of work. This is a job for a workshop.
Will C0915 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.