Code 32, EGR System Error (1 Of 3): Notes

ECM operates a normally closed solenoid to regulate vacuum to EGR valve. When ECM provides a path to ground for the EGR solenoid winding, solenoid opens, allowing vacuum to pass through to EGR valve. ECM monitors EGR effectiveness by shutting off vacuum to EGR valve during a steady cruise above 50 MPH, and monitoring the change in MAP sensor vacuum signal. If vacuum signal change is not within a precalibrated window, Code 32 will be set.