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Home / DTC / C1244 — Front Left(FL) Height Sensor Abnormal

C1244 — Front Left(FL) Height Sensor Abnormal

Detailed page for trouble code C1244.

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Code

C1244

HYUNDAI C — Chassis

Front Left(FL) Height Sensor Abnormal

Brand: HYUNDAI
Type: C — Chassis
AI status
Completed
ready
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Page language: EN

Causes

  • Front left height sensor electrical open, short to ground or short to voltage
  • Corroded, loose or damaged connector or wiring harness at the sensor
  • Failed or mechanically jammed height sensor (potentiometer or travel sensor)
  • Faulty suspension/level control module or poor module ground
  • Aftermarket modifications or collision damage affecting sensor or linkage
  • Intermittent wiring due to chafe, pinched cable or water intrusion

Symptoms

  • Warning lamp or message related to suspension/level control
  • Incorrect or unstable ride height at the front left corner
  • Automatic leveling system disabled or working intermittently
  • Uneven stance, vehicle sagging on front left side
  • Diagnostic trouble code stored (C1244) and possibly related codes

What to check

  • Read freeze frame and live data with a scan tool; confirm C1244 is current or stored
  • Visually inspect sensor, linkage and connector for damage, corrosion, water or loose pins
  • Wiggle test wiring while monitoring live sensor value to check for intermittent changes
  • Verify reference voltage and ground at the sensor connector with ignition ON
  • Measure sensor output while manually moving suspension or actuating lift to observe smooth change
  • Check continuity between sensor connector and level control module connector

Signal parameters

  • Sensor type: typically potentiometer or position sensor providing analog voltage signal
  • Reference supply: usually ~5 V reference and a ground (verify with scan tool/service manual)
  • Output voltage: normally a variable DC voltage within ~0.5–4.5 V that changes smoothly with suspension travel
  • Expected behavior: steady value when stationary, smooth, proportional change when wheel is raised/lowered; no sudden jumps or dropouts
  • Resistance/continuity: internal potentiometer should vary smoothly (no open circuit); continuity to module expected

Diagnostic algorithm

  1. Confirm code: Use a scan tool to read and record DTCs and live sensor data for the front left height sensor. Note values at key states (ignition ON, engine off).
  2. Reproduce: While watching live data, raise/lower the vehicle or have assistant bounce the front left corner to observe if the sensor value changes smoothly. If intermittent, perform a wiggle test on wiring and connector.
  3. Visual inspection: Inspect sensor, linkage and harness for physical damage, corrosion, water entry, bent linkage or binding.
  4. Check power/ground: With ignition ON, back-probe the sensor connector to verify reference voltage (≈5 V) and a good ground. If reference or ground missing, trace back to control module and fuses.
  5. Measure output: If power and ground are present, measure sensor output voltage while moving suspension. Expect a smooth variable voltage within the stated range. Sudden jumps, fixed voltage or open circuit indicate sensor or wiring fault.
  6. Continuity test: If output is abnormal, disconnect battery and check continuity and for short to ground or battery between sensor signal wire and level control module. Repair any shorts or opens.
  7. Connector/service: Clean or replace corroded connectors and repair wiring using proper terminals and sealing; avoid pin-stretching.
  8. Replace sensor: If wiring and connector are good but sensor output is out of specification or intermittent, replace the front left height sensor.
  9. Module check: If sensor and wiring test good and code persists, inspect suspension/level control module, its power/grounds and CAN communication. Consult service manual for module bench tests.
  10. After repair: Clear codes, perform any required sensor alignment/leveling or module relearn procedures per manufacturer, then road test and verify correct operation and no return of the code.

Likely causes

  • Corroded/loose connector at the front left height sensor
  • Broken or chafed wiring in the harness between sensor and control module
  • Failed front left height sensor (most common on older vehicles)
  • Poor ground at sensor or control module

Fault status

⚠️ Status
Front Left Height Sensor Abnormal — sensor signal out of range, open/short or intermittent detected by suspension/level control module.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0 - 2.5 hours

Similar codes

C1241 C1242 C1243 C1245 C123F U0121
371

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