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Home / DTC / C1D16 — Steering column position sensor — signal fault

C1D16 — Steering column position sensor — signal fault

Detailed page for trouble code C1D16.

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C1D16

LAND ROVER C — Chassis

Steering column position sensor — signal fault

Brand: LAND ROVER
Type: C — Chassis
Views: UK: 3 EN: 5 RU: 2
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Page language: EN

Causes

  • Damaged or corroded wiring or connector at the steering column position sensor
  • Faulty steering column position (steering angle) sensor
  • Poor ground or missing reference/ignition supply to the sensor
  • Intermittent connection due to movement (pin break, chafing)
  • Water ingress or contamination of sensor/connector
  • Faulty steering control module, BCM or CAN/LIN communication fault

Symptoms

  • Steering warning lamp or general warning lamp illuminated
  • Loss or reduction of steering-related features (e.g., lane-keep, active steering assist, stability/traction aids influenced)
  • Inability to perform steering angle sensor calibration / ADAS calibration faults
  • Intermittent faults that change with steering wheel position or movement
  • Possible limp or reduced functionality mode for electronic power steering systems

What to check

  • Read stored and pending DTCs and freeze-frame data with a capable scan tool; note history and frequency
  • Visually inspect the steering column area, sensor and connector for damage, corrosion or water
  • Check for related communication codes (U-codes) or multiple steering/ABS related faults
  • Verify battery voltage and ignition supply before testing (stable 12 V with key on)
  • Backprobe sensor connector: verify reference (typically 5 V), ground and signal present
  • Probe signal while rotating the steering from lock-to-lock to check for smooth, continuous output

Signal parameters

  • Typical supply/reference: ~5 V (verify exact value from workshop manual)
  • Typical signal output: analogue 0.5–4.5 V with center near ~2.5 V and varying smoothly with rotation (or dual-channel 90° out-of-phase Hall signals on some sensors)
  • Some systems use digital/PWM or LIN/CAN messages instead of a simple analogue voltage — expected: valid CAN/LIN steering angle messages at normal bus voltage levels
  • Signal should be stable (no rapid noise spikes) and change proportionally with steering wheel angle; no open/short to voltage or ground
  • If two-channel (A/B): channels should show ~90° phase shift and similar amplitude

Diagnostic algorithm

  1. Connect a diagnostic scanner, read full fault list and note freeze-frame and bus status. Clear codes and see if C1D16 returns.
  2. Visually inspect sensor and connector for corrosion/damage; ensure connector seats fully and locking tab engaged.
  3. With ignition ON (engine off for safety), backprobe connector: verify reference voltage (≈5 V), ground continuity, and sensor signal at straight-ahead. Compare to expected values in workshop data.
  4. Rotate steering slowly from lock-to-lock while monitoring signal (oscilloscope preferred). Look for smooth analog change, missing sectors, noise or dropouts. Wiggle harness to check for intermittent faults.
  5. If signal absent but reference and ground present, suspect internal sensor failure — replace sensor or perform module swap where applicable.
  6. If no reference or ground, trace wiring back to fuse/module; repair open/short; check related fuses and ignition supplies.
  7. If sensor output is digital (CAN/LIN), verify bus communication with scanner and check for other modules reporting steering angle. Diagnose lost/bad messages (check bus integrity, termination, module health).
  8. After repair or replacement, perform required steering angle/sensor calibration or ECU relearn per manufacturer procedure and confirm no recurrence of the DTC.
  9. Road test and monitor live data to confirm correct, stable steering column position values across full steering travel.

Likely causes

  • Loose/corroded connector at the steering column sensor
  • Failed steering column position sensor
  • Broken or shorted signal wire caused by steering column movement
  • Missing 5 V reference or poor ground at the sensor

Fault status

⚠️ Status
Steering column position sensor — signal fault: steering angle signal missing, implausible or out of range.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-3 hours

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