The C1441 OBD2 fault code relates to the Steering Phase A Circuit Signal Is Not Sensed circuit. This is part of the vehicle's chassis control system. When a circuit failure occurs, the control module cannot properly monitor or regulate this system, which may affect braking, traction, stability, or suspension performance.
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Symptoms
- Stability control light on
- Steering feels different or heavy
- Vehicle pulls to one side
- Stability control not functioning
- Possible warning chime
Common Causes
- Faulty component — internal damage or wear affecting the Steering Phase A Circuit Signal Is Not Sensed
- Wiring issues — broken, corroded, or chafed wires in the circuit
- Connector problems — loose, oxidized, or moisture-damaged pins
- a general circuit failure is detected — can result from wiring faults, connector issues, or component failure
- Control module fault — rare, but the chassis control module may have an internal fault
Step-by-Step Diagnosis
- Scan with OBD2 tool — Confirm C1441 is active. Check for additional chassis DTCs.
- Visual inspection — Examine the Steering Phase A Circuit Signal Is Not Sensed wiring and connector for corrosion or damage.
- Check voltage and ground — Use a multimeter to verify proper reference voltage.
- Test component — Compare readings to factory specs. A stuck or erratic signal confirms failure.
- Check for shorts/opens — Perform continuity tests on the wiring between the component and control module.
Repair & Solutions
- If the component is defective, replace the Steering Phase A Circuit Signal Is Not Sensed with an OEM or quality aftermarket part.
- Repair any damaged wiring or connectors using proper methods.
- Clear the DTC with an OBD2 scanner and test drive to verify the code does not return.
- If the code persists after component replacement, inspect the control module connector or consider module testing.
Related Codes
- C1438 — Accelerometer Rear Circuit Short To Battery
- C1439 — Vehicle Acceleration EEC-IV Circuit Failure
- C1440 — Pressure Transducer Main/Primary Signal Faulted
External References & Forum Discussions
- Forum discussion
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