Code
C1363
Generic
C — Chassis
Steering Angle Sensor Circuit Malfunction
Views:
UK: 1
EN: 4
RU: 5
AI status
Completed
Completed
100%
Causes
- Faulty steering angle sensor/module
- Open, shorted, chafed or corroded wiring or connector to the sensor
- Poor ground or supply voltage to the sensor
- Loss of CAN/LIN communication between SAS module and ABS/ECU
- Sensor misalignment or incorrect calibration after repairs
- After-collision damage to steering column or sensor
Symptoms
- ABS, ESC/traction control, or stability warning lamp illuminated
- Reduced or disabled stability/traction assist functionality
- Steering wheel orientation not recognized by vehicle systems (e.g., wrong center point)
- Electronic steering aids behave incorrectly or are limited
- Possible stored multiple related communication/error codes
What to check
- Read all stored and pending DTCs, note freeze frame and related codes
- Check for communication faults on CAN/LIN bus with a scan tool
- Visually inspect sensor connector and wiring along steering column for damage, corrosion, or pin/backing issues
- Verify vehicle battery voltage and inspect ground connections
- Monitor live data: steering angle sensor output vs. known center position and compared to wheel speed/steering wheel rotation
- Perform wiggle test on wiring/connectors while monitoring live data for intermittent change
Signal parameters
- Typical voltage output (if analog): ~0–5 V span, center position ≈ 2.5 V (varies by manufacturer)
- Redundant channels: two separate outputs with similar values (if present) — discrepancy indicates internal sensor fault
- Digital/serial: CAN or LIN frames carrying steering angle value and checksum; expected message ID and periodic rate (e.g., steady 10–100 Hz depending on vehicle)
- Angle vs. wheel rotation: angle value should move smoothly and proportionally as wheel is turned from lock-to-lock
- Noisy or stuck signal, sudden jumps, or loss of message indicate a fault
Diagnostic algorithm
- Retrieve and record C1363 and any other stored codes, freeze frame and live data. Clear codes and re-scan to confirm persistence.
- Inspect sensor connector and wiring at the steering column for corrosion, bent pins, stretched wires, or chafing. Repair or replace damaged wiring as needed.
- Verify power and ground at the sensor connector with ignition ON. Confirm nominal battery voltage and good ground continuity.
- Monitor steering angle signal(s) with a scan tool or multimeter while slowly turning the steering wheel from lock to lock. Look for smooth, continuous change and matching redundant channel values where applicable.
- Perform a wiggle test on the harness and connectors while watching live data for intermittent faults.
- Check CAN/LIN bus health: look for bus-off, error counters, or loss of messages using diagnostic tool. Repair any bus faults.
- If wiring and communication are good but signal values are implausible or channels disagree, replace the steering angle sensor/module.
- After repair or replacement, perform manufacturer-specific steering angle sensor calibration/relearning procedure (required on most vehicles) and then verify system operation with a test drive.
- If the problem persists after replacing sensor and repairing wiring, consider module-level faults (ABS/steering ECU). Use manufacturer diagnostics for module bench testing or reprogramming.
Likely causes
- Damaged wiring harness or connector at the steering column
- Steering angle sensor failed (internal electronics)
- Sensor lost calibration (wheel/steering off-center after battery disconnected or steering service)
- Corroded ground or low battery voltage during operation
Fault status
Status
Steering Angle Sensor Circuit Malfunction — control module detected abnormal or missing steering angle signal or communication. May disable stability/traction features until repaired and the sensor is calibrated.
Repair difficulty: Medium
Diagnostic time: 1.0 - 2.5 hours
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