DTC B2599 Dodge

Idle Air Control System RPM Higher Than Expected

Idle Air Control System RPM Higher Than Expected

Description

Engine running at hot idle in closed loop, and the PCM detected an IAC System Overspeed condition during the CCM test.

Cause and Solution

EGR valve is stuck open or leaking, or the gasket is leakingEVAP purge valve is leaking or stuck in open positionIAC solenoid control circuit is shorted to ground (intermittent)IAC valve is stuck open (it may be dirty or have failed)PCV

Video Guide

Duration: PT4M9S | Uploaded: 2020-06-17

Diagnostic Info

  • DTC Code: B2599
  • Brand: Dodge
Back to Blog