P2004 P2006 Intake Manifold Runner Control IMRC Function and Diagnostics 059b fault code p0171



Intake Manifold Runner Control (IMRC) systems can be challenge to diagnose, especially when the service information available to you isn't accurate! In this training class we will explore how an IMRC system functions and how to approach diagnosing it properly the first time.



  • Intake Manifold Runner Control (IMRC) systems can be challenge to diagnose, especially when the service information available to you isn't accurate! In this training class we will explore how an IMRC system functions and how to approach diagnosing it properly the first time. Join us for the fun when we look at a 2004 Ford Focus with a sluggish driveability complaint and setting codes P2004 (IMRC stuck closed), and P2006 (IMRC stuck open).