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Home / DTC / C2113 — Valve Relay Abnormal

C2113 — Valve Relay Abnormal

Detailed page for trouble code C2113.

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Code

C2113

HYUNDAI C — Chassis

Valve Relay Abnormal

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

Causes

  • Faulty valve relay (coil or contacts)
  • Open/short in relay wiring harness or poor connector contact
  • Blown fuse or weak battery supply to relay
  • Corroded or water‑ingressed connector/relay socket
  • Stuck or mechanically seized hydraulic valve
  • Faulty ABS/ESC hydraulic unit or control module

Symptoms

  • ABS or ESC warning lamp illuminated
  • Traction control / stability functions disabled
  • Possible change in ABS pump/noise or lack of pump activation during ABS events
  • Brake feel may be normal at low speeds but ABS may not engage
  • Diagnostic trouble codes stored related to valve/relay circuits

What to check

  • Read and record stored DTCs and freeze frame data with a scan tool; clear and recheck
  • Visually inspect relay, relay socket, associated fuses and wiring for corrosion, damage, water entry or loose terminals
  • Verify battery voltage at vehicle battery and at relay supply terminal (engine off and running)
  • Using a scan tool, attempt to command/actuate the valve/relay output while monitoring live data
  • Check continuity and resistance of relay coil and wiring to control module (disconnect battery before resistance tests if required)
  • Inspect ABS/ESC hydraulic unit for fluid contamination or signs of internal valve seizure

Signal parameters

  • Relay feed (constant supply) voltage: approx. battery voltage (typically 11–14.5 V) when key on
  • Control output: module switches relay coil to ground or +12 V depending on design; should show a change when commanded by scan tool
  • Relay coil resistance: typically tens to a few hundred ohms (consult vehicle service manual for exact spec)
  • When commanded, control signal may be steady or pulsed (ABS active); use oscilloscope or high‑speed data capture to verify switching waveform
  • Open circuit: near infinite resistance; short to ground: near 0 Ω

Diagnostic algorithm

  1. Retrieve all related codes and vehicle history with a capable scan tool. Note whether code is permanent or intermittent.
  2. Visually inspect relay, fuse(s) and connectors for corrosion, water, heat damage and secure fit. Replace any damaged connectors or fuses as required.
  3. With ignition ON, measure battery voltage at relay supply terminal and at relay socket pin. Compare to battery voltage. Repair supply or fuse if low or missing.
  4. If accessible, remove relay and measure coil resistance against factory spec. If coil open or outside spec, replace relay.
  5. With relay removed, check continuity from module control pin to relay socket control pin. Wiggle wiring harness to look for intermittent faults.
  6. Using scan tool, command the valve/relay ON and OFF while observing supply and control signals. Listen for relay click and pump/valve operation. If module commands but relay does not energize, suspect relay/supply/wiring.
  7. If relay and wiring test good but control module does not provide correct switching signal, inspect module grounds and supply; consider module fault and consult manufacturer procedures before replacement.
  8. After repairs, clear codes and perform a road and controlled test to verify ABS/ESC operation and ensure code does not return.

Likely causes

  • Relay coil failed or contact welded
  • Connector pins corroded or bent at relay socket
  • Open circuit or high resistance in relay supply or ground
  • Blown fuse feeding the relay or ABS pump circuit
  • Control module driver transistor failed or intermittent

Fault status

⚠️ Status
Valve relay abnormal — control module detected an unexpected condition in the valve relay circuit. Inspect relay, fuses, wiring and control module outputs.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5–2.0 hours

Similar codes

C2110 C2111 C2112 C2114 C1234
371

Browse 371 HYUNDAI manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

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