C0170 moderate

Active Suspension Crosslink Solenoid Malfunction

The C0170 code means the vehicle's onboard diagnostic system has detected: Active Suspension Crosslink Solenoid Malfunction. This is a moderate severity code.

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Keep driving?: Yes, but fix soon
DIY difficulty: hard
Estimated cost: $300 - $1,000 (parts and labor)

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BlueDriver Bluetooth Pro Scanner

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Read ABS Codes

LAUNCH CRP123X (Reads ABS + Chassis)

Basic scanners cannot read ABS codes. This one reads all four systems so you know exactly which sensor failed.

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Common Symptoms

Suspension warning light on
Excessive body roll during cornering
Ride height uneven side to side
Active roll control not functioning
Vehicle sways more than normal

Probable Causes (Ranked by Likelihood)

Failed crosslink solenoid valve Very High
Hydraulic fluid leak in active stabilizer system High
Corroded solenoid connector Moderate
Active suspension module solenoid driver fault Low

Step-by-Step Diagnostic Procedure

Scan suspension module for crosslink DTCs
Inspect active stabilizer bar system for leaks
Test crosslink solenoid resistance
Check solenoid connector for corrosion
Command solenoid with scan tool and observe response

Frequently Asked Questions

What is an active suspension crosslink?

The crosslink connects the left and right air springs or hydraulic dampers, allowing the system to transfer pressure between sides to reduce body roll during cornering and improve handling.

Is this system only on luxury vehicles?

Active roll control and crosslink systems are primarily found on larger luxury SUVs and high-performance vehicles where controlling body roll is important for both comfort and handling.

Can I drive normally without this system working?

Yes, but you will notice increased body roll during turns and potentially a less stable feel at highway speeds. The vehicle is still safe to drive but the handling will be degraded.