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Home / DTC / C2715 — In Line Test Failure-Not Calibrated U Codes

C2715 — In Line Test Failure-Not Calibrated U Codes

Detailed page for trouble code C2715.

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Code

C2715

HYUNDAI C — Chassis

In Line Test Failure-Not Calibrated U Codes

Brand: HYUNDAI
Type: C — Chassis
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Required module or sensor not calibrated or initialization incomplete after repair or battery disconnect
  • Failed or interrupted module reprogramming/flash
  • Low or unstable battery/charging system voltage during initialization
  • CAN (or other vehicle network) communication error between modules
  • Damaged wiring, connectors, poor ground, or corroded terminals
  • Faulty sensor or control module hardware (ABS/ESC/steering angle/yaw sensors)

Symptoms

  • ABS/ESC/VDC/Traction control warning lamp(s) illuminated
  • Stability control, traction control, or related features disabled or reduced functionality
  • One or more related functions fail to operate (e.g., hill start assist, stability assist)
  • Diagnostic trouble codes for related modules or network (U‑codes) present
  • Possible limp-home behavior if related powertrain modules affected

What to check

  • Read all stored DTCs with a capable scan tool (include U‑codes and freeze frame data)
  • Check vehicle battery and charging system voltage (battery should be healthy and >12.4 V at rest; >13.5 V with engine running)
  • Verify recent service history: module replacements, software updates, battery disconnects
  • Check for active network communication: verify CAN/LIN bus is active and modules respond to the scan tool
  • Inspect connectors and wiring for the affected modules and sensors for corrosion, damage, or loose pins
  • Confirm whether the affected module reports ‘not calibrated’ or similar status in parameter data

Signal parameters

  • Battery voltage at module (typical: ~12–14.5 V)
  • CAN bus activity (messages/sec from related modules)
  • Module status flags or initialization state (calibrated / not calibrated)
  • Steering angle sensor output (degrees) and learn status
  • Wheel speed sensor pulses or calculated wheel speed (pulses/sec relative to vehicle speed)
  • Yaw rate sensor output (deg/s) and self‑test status

Diagnostic algorithm

  1. Connect a manufacturer‑capable scan tool. Read and record all DTCs (including U‑codes) and freeze frame data. Note any codes that indicate communication loss.
  2. Verify battery state of charge and charging system. If battery is low, charge or replace and retest; low voltage can prevent calibrations.
  3. Clear codes, cycle ignition, then attempt to reproduce. If C2715 returns, proceed.
  4. Check network communications: verify the affected module responds to the scan tool and that related modules (ABS, SRS, ECM, BCM) are present. Repair any CAN/LIN wiring or connector faults first.
  5. Inspect connectors and wiring to the concerned module and sensors (look for damaged wires, corrosion, poor ground). Repair as needed.
  6. If a module, sensor, or harness was recently replaced or reprogrammed, confirm the correct software version and perform the OEM-recommended initialization/calibration routine (steering angle sensor calibration, ABS bleed/learn, module “in‑line” initialization, etc.).
  7. If calibration fails, check live data for the sensor signals used during calibration (wheel speed sensors, steering angle, yaw rate). Replace faulty sensors if they provide out‑of‑range values.
  8. If communication and wiring are good and calibration procedures still fail, attempt a reflash/reprogram of the affected module per OEM procedures. Follow security/initialization steps exactly.
  9. After successful calibration/initialization, clear codes and perform a road test to confirm no reoccurrence. If code persists, consider module replacement only after confirming wiring, sensors and software are correct.
  10. Refer to manufacturer service bulletin and wiring diagrams for module‑specific troubleshooting if available.

Likely causes

  • Module replacement or connector unplugged and calibration not performed
  • Battery lost charge or was disconnected and automatic calibration did not complete
  • CAN bus communication error preventing calibration handshake
  • Steering angle sensor or yaw rate sensor not initialized or out of expected range

Fault status

⚠️ Status
In‑line self test failed — one or more units not calibrated/initialized. Module reports calibration or initialization incomplete; some vehicle stability/ABS functions may be disabled.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-3 hours

Similar codes

U0100 U0121 U0073 C1234 C1201
371

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