P2005 — Intake manifold runner stuck open on bank 2

The intake manifold runner control on the engine's second bank is stuck open, affecting airflow and engine performance. This usually happens because the valve or actuator controlling the runner is jammed or malfunctioning. It can cause rough idling, reduced power, and increased emissions.

Common causes

The cause is almost always one of a few things. Here they are — P2005 rarely comes from anything outside this list:

• Faulty intake manifold runner control valve
• Damaged or stuck actuator motor
• Vacuum leaks around the intake manifold
• Wiring or connector issues to the actuator
• Carbon buildup causing valve to stick

Where to start

In the order a sensible mechanic would work — the cheap checks first, the expensive replacements only after:

1. Inspect and clean intake manifold runner valve
2. Check actuator motor operation and vacuum lines
3. Test wiring and connectors for damage or corrosion
4. Replace faulty actuator or valve if cleaning fails
5. Perform intake system carbon cleaning if needed

That is what holds for P2005 in general. From here it depends on your engine — tell me which car it is and what it does, and I will give you the steps for it: real procedures, torque figures and diagrams instead of general advice.