C0860: Trailer Stability Assist Performance

The trailer stability assist function detects implausible trailer sway response or sensor input.

Symptoms

• ABS warning light on
• ESC/stability control deactivated
• Possible reduced brake assist
• Speedometer may behave erratically

Most likely causes

• Trailer module communication fault
• Yaw sensor drift

What to check, in order

Start with the simplest. You can tick off each step.

1. Check that the brakes respond normally and check the fluid level
2. Compare the reading with other engine data while varying the engine speed.
3. Read the ABS codes with a multi-system scanner
4. Check the wheel sensors, connectors, and wiring
5. Compare the speeds of all four wheels in live data
6. Leave any work on the hydraulic circuit to a professional

Good to know

• Repair difficulty: medium

What each character of C0860 means

• C: Chassis
• 0: Generic code: same on every make
• 8: Subsystem depends on the code range
• 60: Specific fault in that system

Frequently asked questions

Can I keep driving with code C0860?

The regular brakes usually keep working, but without ABS or the driver aids. Drive very carefully and go to a repair shop; if the pedal feel changes, do not keep driving.

What causes code C0860?

The most common causes are: trailer module communication fault; yaw sensor drift.

Sources

• en.wikipedia.org: Trailer stability program

Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.