I have an actron ODB 2 scanner and when I ask what the error code P1518 means it says Manf Cntrl Veh. Spd. Idle speed control Auxiliary Inputs. I have a Haynes Manual but the code isn't even listed. So I googled the code also and received a different meaning. Instead Ford Code reading online says p1518 means Intake Manifold Runner Control. Should I change the Idle Air Control Valve, IMRC, or both? Anyone have any suggestions? I cant afford a mechanic and trying to get engine light off to pass emissions. Thankx
Error code P1518 on 1999 Ford Escort
by jigeej in Uncasville, CT on February 18, 2014
ANSWER by ProfessorG , February 18, 2014
That doesn't mean to change parts, it means to find and repair the issue that is causing that components issue.
ANSWER by globalhelper , February 19, 2014
could also be a vaccum leak causing the could.as stated do not start repl parts its a control or parts issue but needs diag 1st