Help with a Code

Mustanggt108

New Member
Sep 23, 2005
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i tried to search for it but no luck yet.Can someone please help me with this code.Everytime i plug my Xcal2 to read codes or datelog , it throws this code: P0404 . what is this code for ?
 
If it's not tripping your MIL and you're not having drivability issues or loss of power, I'd chalk it up to the xcal. Sounds similiar to the "coolant temp out of range" if your car isn't warmed up all the way and you try pulling codes from a foxbody.
 
Every time i start the car up.The "Check engine" Light comes up, so i plug the Xcal2 in and pull the P0405 code.Then I erase the code with the Xcal , and the "Check engine" sign is gone.So i drive around for a while and everything would be great.But when i stop the car , and try to start it again say the next day.The Check engine light comes up again and car throws same code???????
 
well , since my car is an overseas vehicle.My dealer said he would have to turn off the back O2 sensors and the EGR in my 87 tune , for it to work correctly.He said there is no back O2 sensors and EGR in my car.So why am i getting "Engine check light" ??
what should i do now.Please help out guys .
thank you