Hey guys,

So I have a b18c5 in a 2000 honda civic and the check engine light came on the other day. I pulled the codes today and they were P1508, P0108, and P0122. This is all part of the IAC system so I went ahead and cleaned the throttle body, intake and iacv but it did nothing. I know the codes are for a Map sensor and TPS but I'm just wondering which one I should go after first or does anyone have any other suggestions?

Thanks

 

Since you have codes, the first place to start would be to check connectors and verify voltages on the MAP and TPS sensors.