The steering angle sensor reports an electrical fault. ESC and lane keeping assistance functions are typically disabled.
High severity. Can I keep driving?If the steering feels stiff or uneven, drive slowly and go to a repair shop or call for roadside assistance. It is a safety system.
Symptoms
- ABS warning light on
- ESC/stability control deactivated
- Possible reduced brake assist
- Speedometer may behave erratically
Most likely causes
- Steering angle sensor failed
- Clock spring damaged
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: medium
What each character of C0440 means
- C: Chassis
- 0: Generic code: same on every make
- 4: Subsystem depends on the code range
- 40: Specific fault in that system
Frequently asked questions
Can I keep driving with code C0440?
If the steering feels stiff or uneven, drive slowly and go to a repair shop or call for roadside assistance. It is a safety system.
What causes code C0440?
The most common causes are: steering angle sensor failed; clock spring damaged.
Related codes
Sources
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.