Code 32, EGR System Error (2 Of 3): Notes

ECM operates a normally closed solenoid to regulate vacuum to EGR valve. When ECM provides a path to ground for 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 in excess of 50 MPH and monitoring change in MAP sensor vacuum signal. If vacuum signal change is not within a precalibrated window, Code 32 will be set.