Steering Phase A Circuit Signal Is Not Sensed
The steering wheel position sensor isn't sending a readable signal to the car's computer, like a radio station that suddenly stops broadcasting. Without this information, the vehicle can't properly control steering assistance or stability features.
The ECU monitors the steering angle sensor (Phase A circuit) which provides real-time wheel position data. The sensor generates a voltage signal that varies with steering input. When this signal drops below minimum threshold or becomes erratic, the ECU cannot detect steering phase information.
| Parameter | Normal Range | Fault Condition |
|---|---|---|
| Steering Phase A Voltage | 0.5V - 4.5V with smooth transitions | Below 0.2V, above 4.8V, or no signal detected |
| Signal Rate of Change | Gradual proportional change with wheel movement | Erratic jumps or frozen voltage for >2 seconds |
Code C1441 is classified as a serious fault. If your check engine light is flashing — not just steady — pull over safely and do not continue driving. A flashing CEL indicates an active misfire or critical failure that can cause catalytic converter damage within minutes or permanent engine harm within miles. Contact a certified mechanic immediately. Do not attempt roadside repairs on high-severity codes unless you are trained to do so.
Once the fault is repaired, C1441 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.
The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.