Code
C1063
Generic
C — Chassis
Steering Angle Sensor Circuit Range/Performance
Views:
UK: 11
EN: 10
RU: 15
AI status
Completed
Completed
100%
Causes
- Faulty steering angle sensor
- Sensor not calibrated or calibration lost
- Open, shorted, corroded or damaged wiring/connectors between sensor and ABS/ECU
- Intermittent connection (water ingress, broken pin, poor crimp)
- Incorrect supply/reference voltage or poor ground
- CAN bus or module communication errors
Symptoms
- ABS, ESC or traction control warning lamp illuminated
- Stability control disabled message or reduced functionality of driver aids
- Steering angle readout incorrect or not changing on scan tool
- Distance-based features (lane assist, adaptive cruise) may be unavailable or misbehave
- Codes repeat after clearing or return intermittently
- Possible limp or reduced handling performance during corrective action by ESC
What to check
- Connect a full-function scan tool; read freeze frame and live steering angle sensor values
- Check for other related codes (ABS/ESC, CAN bus, power/ground faults)
- Visually inspect sensor, connector, and wiring harness for damage, corrosion, moisture
- Backprobe sensor connector; verify reference voltage (often 5 V or 3.3 V), signal voltage, and ground
- Compare steering wheel rotation to live sensor angle on scan tool (turn wheel while monitoring)
- Check CAN bus integrity (voltage levels, termination, message presence) if sensor transmits digitally
Signal parameters
- Analog sensors: typical signal range ~0.5–4.5 V with center near mid-supply (~2.5 V); output moves smoothly with steering angle
- Digital/serial sensors: CAN or LIN messages at vehicle-specific IDs, update rate typically 10–200 Hz; data should increment smoothly with wheel rotation
- Expected steering wheel angular range depends on vehicle (commonly ±720° to ±1080°); values beyond physical limits indicate fault
- Response should be monotonic and continuous; sudden jumps, noise, or frozen value indicate poor signal or sensor failure
- Reference supply tolerance: within manufacturer spec (commonly ±5% of nominal 5 V/3.3 V)
Diagnostic algorithm
- Retrieve and record all stored codes and freeze-frame data. Note whether code is current or historic.
- Verify symptom: with ignition on, monitor live steering angle value while slowly turning steering wheel from lock-to-lock. Look for smooth, proportional changes and realistic angle values.
- Inspect connector and wiring for damage, corrosion, pin push-out or water ingress. Repair any obvious wiring faults and re-check.
- Backprobe sensor: verify reference voltage, ground continuity, and signal waveform/voltage with multimeter and, if available, oscilloscope. Compare to expected parameters.
- If sensor is a CAN/LIN device, verify bus voltages and presence of steering angle messages using a scan tool or bus analyzer. Check for bus errors or conflicting node.
- Wiggle harness and connectors while monitoring live data to find intermittent connections.
- If electrical checks are good but values are incorrect, check mechanical mounting and indexing. Re-align or adjust sensor per manufacturer procedure.
- Clear codes, perform steering angle sensor relearn/calibration procedure using scan tool (many systems require relearn after repair or battery disconnect).
- If fault persists after wiring, power/ground and calibration verification, replace the steering angle sensor. Relearn and road-test to confirm resolution.
- If replacing sensor does not clear the fault, investigate ABS/ESC module or CAN bus for faults and consider module reprogramming or replacement.
Likely causes
- Steering angle sensor failure (internal electronics degraded)
- Connector pin corrosion or bent pins at sensor or control module
- Broken signal wire or short to battery/ground
- Loss of 5 V or 3.3 V reference to the sensor
- Sensor rotated/misaligned after work (wheel/column removed) and not re-learned
- CAN high/low wiring short/open or intermittent termination fault
Fault status
Status
C1063 — Steering Angle Sensor Circuit Range/Performance. Sensor output is outside expected range or inconsistent with vehicle motion. May disable stability/traction functions until corrected.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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