What causes a P2006 code?

P2006 can be triggered by several issues — see the verified probable causes and step-by-step diagnostics shared by mechanics and owners on OBDIY.

Can I drive with a P2006 code?

Drivability depends on the severity. Check the severity rating and verified driver reports on this page before continuing to drive with P2006 active.

Follow the step-by-step diagnostic on this page, then read the verified fixes contributed by other Heavy Truck owners — the answer marked "Verified Cause" worked for the original poster.

OBDIY

OBD-II

P2006

Intake Manifold Runner Control Stuck Closed Bank 1

What it means

The Engine Control Module (ECM) has detected that the intake manifold runner control (IMRC) valve or flaps are stuck in the closed position, impeding airflow at higher engine speeds.