C0920: Suspension Control Module Internal Fault

The suspension control module fails its internal self-test. Adaptive damping or air suspension is disabled.

Symptoms

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

Most likely causes

• Module internal failure

What to check, in order

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

1. See whether the car is leaning to one side
2. Read the codes with a multi-system scanner
3. Check the connectors and ride height sensors
4. Check for air leaks if it has air suspension

Good to know

• Repair difficulty: hard

What each character of C0920 means

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

Frequently asked questions

Can I keep driving with code C0920?

Drive slowly and avoid long trips if the car is sitting low or behaving strangely.

What causes code C0920?

The most common causes are: module internal failure.

Sources

• en.wikipedia.org: Active suspension

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.