P2006
Intake Manifold Runner Control Stuck Closed (Bank 1)
Encountering the engine check light code P2006 signifies an explicit mechanical or electrical operational breakdown categorized as "Intake Manifold Runner Control Stuck Closed (Bank 1)". Professional scanner tools usually flag this subsystem loop early on.
Driver's Summary
Code P2006 means your vehicle detected a problem with the intake manifold runner control stuck closed (bank 1) system. You may notice lack of high-rpm power, poor fuel economy, check engine light, all of which are direct consequences of this malfunction. Short trips are generally acceptable, but avoid high-load driving and get this inspected soon.
Symptoms
Lack of high-RPM power, poor fuel economy, check engine light
Common Causes
- IMRC actuator failure
- Carbon restricting flap movement
- Vacuum leak preventing actuation
- Binding mechanical linkage
How to Fix
- 1 Replace IMRC actuator
- 2 Remove and manually clean intake flaps
- 3 Perform vacuum leak test and repair
- 4 Lubricate or replace linkage
Technical Explanation
To set P2006, the PCM samples the affected circuit multiple times per second, comparing live readings against manufacturer-programmed operating windows. A two-trip detection strategy is employed for most powertrain codes: the fault must be detected on one drive cycle, the vehicle key-cycled off, and the fault detected again on the next drive cycle before the MIL illuminates and a permanent DTC is stored. After two failed drive cycles, the code transitions from a pending to a confirmed DTC, and the PCM activates the MIL. Clearing the code without repairing the fault will result in re-illumination within one to two complete drive cycles.
Is It Safe to Drive?
While the vehicle is typically drivable with P2006 active, avoid towing, aggressive acceleration, or extended highway driving until the fault is resolved. The primary risk is accelerated wear on imrc actuator failure and carbon restricting flap movement.
Mechanic's Pro Tip
For P2006, test the solenoid's coil resistance with a multimeter before ordering parts — most solenoids should read between 14 and 40 ohms; an open (infinite resistance) or short (near zero) confirms it's failed electrically. Also verify the PCM is commanding the solenoid by backprobing the connector with a test light during the relevant operating condition — if there's no command signal, the fault is in the PCM or wiring, not the solenoid itself.
Actuator replacement: $150 - $350; Manifold replacement: $600 - $1,200