Why would only one bank get stuck if both are the same age?

That is the right question to ask, and the answer is usually that the cause is not age-related at all. Deposits build on both banks at similar rates, so a one-sided failure argues for something that exists on only one side: a vacuum line, a bank-specific solenoid, a linkage disturbed during earlier work, or ventilation routing that favours one plenum half. Use the asymmetry as evidence rather than treating it as bad luck.

I also have a Bank 2 lean code. Which do I fix first?

The runner. A bank breathing through a permanently restricted path produces a different mixture than its twin, and the module's per-bank fuel trim correction is what generates the lean code. Fix the airflow problem, clear the codes and complete a drive cycle. If the lean code returns after that, it is a separate fault and worth its own diagnosis.

Does a stuck-closed runner on one bank damage anything?

Not directly, in the ordinary case. The engine still runs, and the affected bank simply cannot fill as well at high revs. The two things worth watching are a cracked flap blade, which sits directly upstream of the intake valves, and the fuel trim correction, which if left long enough is a change in how that bank runs rather than a fault the module has resolved. Neither is an emergency, but neither improves with waiting.

Do I have to replace the whole intake manifold?

It depends entirely on the design. Some manufacturers sell the actuator, the linkage and even the shaft assembly separately, and the repair stays modest. Others cast the flaps and shaft into the manifold half with no serviceable parts, and a seized shaft means a complete manifold. Check parts availability for the specific engine before assuming either outcome, because the two answers differ by around a thousand dollars.

OBD-II trouble code

P2007: Intake Manifold Runner Control Stuck Closed (Bank 2)

The Bank 2 runner flaps are held shut and will not open. A one-sided stuck-closed condition is unusual enough that the asymmetry itself narrows the diagnosis considerably.

Medium severityPowertrainAir Intake / Manifold ControlDrivable short-term

Quick facts

System: Powertrain
Category: Air Intake / Manifold Control
Severity: Medium severity
Drivable: Usually safe to drive short-term
Repair cost range: $180 – $1,400
DIY difficulty: Intermediate DIY

What does P2007 mean?

Set aside for a moment what a closed runner does to airflow and consider what it means that only one bank is affected. The most common reason a runner shaft seizes shut is accumulated oil and soot deposit, and deposit arrives through crankcase ventilation, exhaust recirculation and the engine's own oil consumption. Those are engine-wide conditions. Fuel quality is engine-wide. Mileage is engine-wide. If deposits were the cause, both banks would be coated on roughly the same schedule and you would expect P2006 stored next to this code, not this code alone.

So a Bank 2 stuck-closed condition arriving by itself is an argument against the usual cause and in favour of something specific to that side. That is a genuinely useful narrowing, and it points at a short list: a vacuum line to that bank cracked or trapped, a control solenoid that serves only that bank stuck in the applied position, a linkage bent during previous work in that area, a position sensor lying about a shaft that is actually free, or asymmetric ventilation routing that dumps oil vapour into one plenum half. Several engine families route the breather into one bank rather than splitting it, and on those the deposit story becomes bank-specific again — worth checking on the specific engine rather than assuming.

The practical trap with this code is what it drags along. A bank breathing through a permanently restricted path fills its cylinders differently from its twin, so its oxygen sensors read differently and the module trims that bank away from the other. It is common to find a Bank 2 lean code or a Bank 2 misfire stored alongside, and those are louder, more familiar codes that invite a technician to start replacing oxygen sensors and coils. They are consequences. Fix the runner and re-run the drive cycle before spending anything on the fuel or ignition side.

The other thing to establish early is what the manifold costs. Several modern designs cast the runner flaps and shaft into the manifold half and do not offer them as a serviceable assembly, which means a mechanically seized bank is priced as a complete manifold whether the failure is a five-dollar bushing or not.

Common causes

Bank 2 vacuum line cracked, collapsed or pinched so the actuator stays applied
Bank-specific control solenoid stuck in the passing position
Linkage bent or misassembled after earlier work on that side of the engine
Asymmetric crankcase ventilation routing coating one plenum half more heavily
Bank 2 runner shaft seized in its bushings
Position sensor on the Bank 2 actuator reporting closed while the shaft moves freely
Flap blade cracked and wedged in the Bank 2 runner

Symptoms

Check engine light on
Power falling away at higher engine speeds, usually milder than a both-banks fault
Bank 2 fuel trims separating from Bank 1 on a scan tool
Bank 2 lean or misfire codes stored alongside this one
Uneven exhaust note or slight vibration under load
Reduced highway acceleration with normal low-speed driving

Diagnostic steps

1.Check whether P2006 is also stored. If it is not, treat carbon as the less likely explanation and look for a bank-specific cause first — that inference is the main advantage this code gives you.
2.Identify Bank 2 from the engine's cylinder numbering rather than by position, then locate its actuator and confirm you are working on the correct side.
3.Compare the two banks' actual runner positions in live data at high engine speed, where both should be open. The one reading closed is your side.
4.Trace the Bank 2 vacuum branch end to end, looking for a line that has been trapped under a bracket, melted against a hot surface, or split at a fitting. A permanently applied vacuum signal holds the flaps shut just as effectively as a seized shaft.
5.Swap the vacuum supply between banks. If the closed condition moves to Bank 1, the actuator and shaft on Bank 2 are fine and the fault is in the control side.
6.Disconnect the Bank 2 actuator and rotate the shaft by hand to separate a mechanical seizure from a control fault.
7.Ignore the accompanying lean or misfire codes until the runner is fixed, then clear and re-run a full drive cycle. Replacing oxygen sensors for a code the runner caused is the most expensive wrong turn available here.

Repair cost

$180 – $1,400

A cracked vacuum line on the Bank 2 branch can be under $200. An actuator or solenoid is typically $250 to $550 installed depending on how buried the bank is. If the runner assembly is not sold separately from the manifold half, the realistic figure is $900 to $1,400 with labour.

Estimate your repair

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DIY vs shop

This is an intermediate DIY job. It usually involves diagnostic steps, specialty parts, and some careful work in tight spaces. If you have the tools and a service manual or trustworthy video for your specific vehicle, it is achievable in a weekend. Otherwise, a competent independent shop will be faster.