C2371

Code

HYUNDAI C — Chassis

TC Front Right Valve-AB

Brand: HYUNDAI

Type: C — Chassis

Views: UK: 13 EN: 15 RU: 13

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Page language: EN

ABS and/or Traction Control (TC) warning lamp illuminated
Traction control reduced or disabled; stability control intervention may be lost
Possible pulsation or altered brake feel under ABS operation
ABS-related fault codes stored and possibly driveability/traction restrictions
Inconsistent braking at that corner during ABS events

Scan for C2371 and related ABS/TC codes; record freeze-frame and live data
Visually inspect ABS modulator and wiring harness at front right valve for damage, corrosion, or fluid contamination
Check fuse(s) and battery/ignition power supply to the ABS/TC module
Backprobe valve connector: check for proper supply voltage and ground when ignition ON and during active test
Measure solenoid coil resistance at connector with connector disconnected
Use diagnostic tool to command/activate the front right valve (active test) and observe response

Solenoid coil resistance (typical): approximately 4 - 30 ohms depending on model (refer to vehicle-specific spec sheet)
Supply voltage: near battery voltage (approx. 11–14 V) present at solenoid supply pin with ignition ON
Ground: switched by ABS/TC module during activation; backprobe should show pulsed/duty signal during modulation
Open-circuit: very high resistance or infinite ohms; Short-circuit: near 0 ohms
Active test result: diagnostic tool should command valve and module should draw current / change state; no change indicates valve/harness/module fault

Retrieve all ABS/TC codes and freeze-frame data; note other related codes.
Perform visual inspection of wiring, connectors, and ABS modulator for damage or contamination.
Check battery voltage and fuses for the ABS/TC system.
With ignition OFF, disconnect front right valve connector and measure solenoid coil resistance. Compare to vehicle spec. Replace valve if open or shorted.
With connector connected, backprobe supply pin with ignition ON to verify battery voltage present. Backprobe control pin and command the valve with a scan tool to observe pulsed ground or voltage and current draw.
If proper voltage and command present but valve does not respond (and coil resistance is correct), suspect internal hydraulic/mechanical seizure or valve failure—replace valve or hydraulic modulator as required.
If no command present, trace wiring back to ABS module for opens/shorts; repair wiring/connector and retest.
If wiring and valve test good but module does not command valve, suspect ABS/TC module driver failure—follow module-level diagnostics and consider replacement or reprogramming per manufacturer procedure.
After repair, clear codes, perform self-tests/active tests and road test to confirm ABS/TC system operates normally; verify no reoccurrence of C2371.
Safety note: do not open or service pressurized brake system without following manufacturer procedures. If hydraulic unit or valve is replaced, follow proper bleeding and diagnostic procedures.

⚠️ Status

C2371 — Traction Control / ABS front right valve abnormal (electrical or hydraulic fault detected).

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.5 - 3.0 hours

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