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P0084 Powertrain

Exhaust Valve Control Solenoid Circuit Bank 2

Generic electrical fault on the exhaust-valve control solenoid for bank 2. The exhaust control valve modulates exhaust backpressure or routing (EGR feed, sound, regen support); a malfunction shifts torque mapping and may trigger limp mode.

Affected components

  • Exhaust valve solenoid
  • Solenoid wiring

Common causes

  • High likelihood: Solenoid coil failed

Diagnostic notes

  • The malfunction indicator lamp may illuminate
  • This code can affect emissions
  • A drive cycle may be required after repair

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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