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C0004 Chassis

TCS Control Channel B Valve 2

Fault on traction control system control channel B valve 2.

Affected components

  • Tcs valve b2

Common causes

  • High likelihood: Valve stuck or coil failed

Possible symptoms

  • ABS warning light on
  • ESC/stability control deactivated
  • Possible reduced brake assist
  • Speedometer may behave erratically

Diagnostic notes

  • The malfunction indicator lamp may illuminate
  • A drive cycle may be required after repair
  • Reduced-power or limp mode may occur

Related codes

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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