Damaged or corroded wiring harness or connector at the rear actuator; Failed rear active roll stabilisation actuator; Blown fuse or faulty relay supplying power to the actuator circuit; Poor ground connection for the actuator or control module; Faulty control module (less common); Water intrusion or physical damage to the actuator or wiring

DTC codes / C09xx · Brakes, steering and suspension / C0916

C0916Active Roll Stabilisation Rear Actuator Circuit

Q: What does code C0916 mean?

Active Roll Stabilisation Rear Actuator Circuit. C0916 indicates that the vehicle's computer has detected a fault in the electrical circuit for the rear active roll stabilisation actuator, which is part of an active suspension system that reduces 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, indicating an open, short, or component failure.

C0916 indicates that the vehicle's computer has detected a fault in the electrical circuit for the rear active roll stabilisation actuator, which is part of an active suspension system that reduces 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, indicating an open, short, or component failure.

SystemChassis

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaBrakes, steering and suspension

Symptoms you may notice

Illumination of the stability control or suspension warning light on the dashboard
Often no symptoms besides the warning light, especially if the system defaults to a passive mode
Reduced cornering stability or increased body roll during turns
A noticeable clunk or noise from the rear suspension over bumps
The vehicle may enter a limp mode or disable other chassis systems

Common causes, most likely first

Damaged or corroded wiring harness or connector at the rear actuator
Failed rear active roll stabilisation actuator
Blown fuse or faulty relay supplying power to the actuator circuit
Poor ground connection for the actuator or control module
Faulty control module (less common)
Water intrusion or physical damage to the actuator or wiring

How to diagnose and fix it

Inspect the wiring harness and connector at the rear actuator for damage, corrosion, or loose pins; repair as needed
Check the fuse and relay related to the active roll stabilisation system and replace if faulty
Measure resistance and voltage at the actuator connector to verify power and ground; compare with manufacturer specifications
Test the actuator directly by applying power and ground to see if it operates; replace if it does not
Check for continuity and short circuits in the wiring between the actuator and the control module
If all electrical checks pass, suspect the control module; perform further diagnostics or replace if necessary
Clear the code and perform a road test to verify the repair

Common Misdiagnosis of C0916

A weak or failing battery can cause voltage drops that trigger this code, so always check battery health and charging system first.
Corroded connectors at the actuator are a frequent culprit, especially in areas with road salt, and may not be obvious without disassembly.
The code can set intermittently due to a chafed wire that only shorts when the suspension moves, so wiggle-test the harness while monitoring live data.
Replacing the actuator without checking the circuit can lead to repeat failures if the underlying wiring issue is not addressed.
Some vehicles require recalibration of the active roll stabilisation system after repairs, which may need a scan tool with special functions.

Can I keep driving with C0916?

Driving with C0916 is generally safe but may compromise handling and stability, especially during emergency maneuvers. Avoid aggressive cornering and have the system inspected promptly to prevent further damage.

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.