OBD Codes List

Diagnostic reference · P0029

P0029

Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2

System
Fuel and air metering (P code)
Lamp
Check Engine Light
Category
Powertrain - Fuel/Air Metering

What it means

P0029 means Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2.

Where it lives

For P0029, the description names the solenoid as the part involved. The description of P0029 puts it on bank 2.

Check these first

  • A clogged or failing bank 2 exhaust valve control solenoid
  • An open or short in the bank 2 exhaust valve control circuit
  • Low or dirty oil at the bank 2 exhaust control gallery
  • A corroded bank 2 exhaust solenoid connector
  • A failed ECM driver for the bank 2 exhaust solenoid

What to do next

  1. Inspect the bank 2 exhaust valve control solenoid and connector
  2. Measure the bank 2 exhaust solenoid resistance
  3. Check oil pressure and condition at the exhaust valve control
  4. Command the bank 2 solenoid and watch the exhaust valve timing
  5. Replace the bank 2 exhaust valve control solenoid if it fails to respond
  6. Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.