1999 Ford Escort Q&A

1999 Ford Escort Question: Error code P1518

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 -
Answer 1
That doesn't mean to change parts, it means to find and repair the issue that is causing that components issue. -
Answer 2
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 -