C0460

Code

OPEL C — Chassis

Invalid Data from Steering Angle Sensor

Brand: OPEL

Type: C — Chassis

Views: UK: 5 EN: 9 RU: 8

AI status

Completed

ready

Completed 100%

Page language: EN

Retrieve DTCs and freeze-frame data with a good OEM-level scan tool
Check live steering angle sensor data while turning steering wheel; watch for jumps, dropouts, or out-of-range values
Compare SAS angle to wheel/vehicle movement or yaw rate sensor values for plausibility
Visually inspect wiring and connector at steering column, clock spring and SAS for damage, corrosion or water entry
Verify reference voltage (often ~5 V or 3.3 V) and ground at the sensor with a multimeter
Backprobe signal line and observe waveform with oscilloscope if available (look for noise, missing pulses, or illogical values)

Typical centre/reference voltage: ~2.5 V (potentiometer-type) or digital output via CAN/SPI; exact value depends on design
Angle range: often ±360°–±900° (±1–2 steering turns) — SAS raw counts should change smoothly as wheel is turned
Signal type: potentiometer (analog), PWM, or digital (CAN/SPI) depending on vehicle model
Expected behavior: smooth continuous change in angle value as steering is rotated; stable centred value when wheels straight
Common fault signs: intermittent dropouts, constant extreme angle reading, no change with steering input

Retrieve and record all stored codes and freeze-frame data. Clear codes and perform a test drive to attempt reappearance.
Inspect harness and connector at the steering angle sensor, clock spring and steering column for chafing, pin corrosion, bent pins, moisture or foreign material. Repair as needed.
With scan tool, monitor live SAS angle while rotating steering from lock-to-lock. Note any missing, jumping or implausible values.
Verify reference voltage and ground at the sensor connector. If reference voltage is missing or unstable, trace power/ground and check related fuses/relays.
If analog/pulse signal present, use an oscilloscope to verify waveform integrity over steering range. Replace sensor if waveform is noisy or intermittent.
Check related sensors (yaw rate, wheel speed) — compare values for plausibility. A mismatch can indicate SAS miscalibration rather than electrical failure.
If wiring and signals are good, perform SAS calibration/relearn procedure with OEM scan tool per service manual. Retest and clear codes.
If fault persists after wiring, communication and calibration checks, replace the steering angle sensor (or clock spring if wiring damage is internal). After replacement, perform required calibration and verify operation.
If problems continue, consider module software update or control module replacement as last resort, after verifying all wiring and sensors.

⚠️ Status

Invalid or implausible steering angle sensor data received by vehicle control module; affects stability/traction systems until resolved.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

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C0460 — Invalid Data from Steering Angle Sensor