Deactivation/Exhaust Valve Control Circuit Bank 2
Generic electrical fault on the cylinder deactivation/exhaust valve control circuit on 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
- Cylinder deactivation solenoid
- Actuator wiring
Common causes
- High likelihood: Deactivation solenoid failed
- Medium likelihood: Wiring break or unplugged connector
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.