Hey everyone..here i have this error code p1505 on my 2002 hond civic ex, D17A2 American made. I sprayed brake cleaner all around the possible vacuum hoses, pcv valve areas,brake booster hose, throttle body, iacv, tps sensor, and valve cover.. The iacv and pcv valve are new so i dont think the iacv is the issue even though parts have manufactured issue..anyone have any ideas that would lead me to the problem i would appreciate it..

 

p1505 and p0505 after fluid replacent - Honda Civic Forum (civicforums.com)


Someone replaced the whole throttle body from a donor car and it solved the issue.