Damaged or corroded wiring harness or connector at the front actuator; Failed front actuator motor or internal position sensor; Blown fuse or faulty relay supplying power to the actuator circuit; Water intrusion or contamination in the actuator connector causing high resistance; Faulty control module for the active roll stabilization system; Loose or damaged ground connection for the actuator circuit

DTC codes / C09xx · Brakes, steering and suspension / C0915

C0915Active Roll Stabilisation Front Actuator Circuit

Q: What does code C0915 mean?

Active Roll Stabilisation Front Actuator Circuit. C0915 indicates that the control module for the active roll stabilization system has detected an electrical fault in the circuit for the front actuator, which is the motorized component that actively counteracts body roll during cornering. The computer monitors the circuit for expected voltage or current and sets this code when the signal is out of range, open, or shorted.

C0915 indicates that the control module for the active roll stabilization system has detected an electrical fault in the circuit for the front actuator, which is the motorized component that actively counteracts body roll during cornering. The computer monitors the circuit for expected voltage or current and sets this code when the signal is out of range, open, or shorted.

SystemChassis

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaBrakes, steering and suspension

Symptoms you may notice

Illumination of the stability control or chassis warning light on the dashboard
Often no symptoms besides the warning light, with the system otherwise functioning normally
Reduced cornering stability or increased body lean during turns
The active roll stabilization system may enter a fail-safe mode and stop assisting
In some cases, a noticeable clunk or noise from the front suspension area when the actuator attempts to operate

Common causes, most likely first

Damaged or corroded wiring harness or connector at the front actuator
Failed front actuator motor or internal position sensor
Blown fuse or faulty relay supplying power to the actuator circuit
Water intrusion or contamination in the actuator connector causing high resistance
Faulty control module for the active roll stabilization system
Loose or damaged ground connection for the actuator circuit

How to diagnose and fix it

Inspect the front actuator connector and wiring for corrosion, damage, or loose pins
Check the fuse and relay for the active roll stabilization circuit
Measure resistance and voltage at the actuator connector to verify circuit integrity
Perform a continuity test on the wiring between the control module and the actuator
If the circuit tests good, substitute a known-good actuator to see if the code clears
Clear the code and test-drive the vehicle to confirm the repair

Before you replace the front actuator

A common misdiagnosis is replacing the actuator when the real problem is a chafed wire hidden behind a splash shield or near a suspension component.
The code can be set by a low battery or charging system issue that causes a momentary voltage drop, so always check battery health first.
Some vehicles require a calibration or relearn procedure after actuator replacement, which if skipped will keep the code stored.
The active roll stabilization system may share power or ground with other chassis systems, so a fault elsewhere can trigger this code.
Water intrusion into the connector is a frequent cause on vehicles driven in wet or salty conditions, even if the connector looks dry from the outside.

Can I keep driving with C0915?

You can usually drive the vehicle with this code, but the active roll stabilization system may be disabled, which reduces cornering stability and increases body roll. Avoid aggressive driving or heavy loads until the fault is repaired.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.