check if youre getting a code for that again. i remember i pulled a code and didnt leave my battery disconnected for long enough so it kept getting that code.

 

code 1684 is driver 5 line 4 and can be serious might be the tranmission cuz my car at this moment stalls when breaking close to 0mph but when i put my car in neutral it stops and works fine.

code 0551 has to do with the power steering sensor circuit range/performance

both of these codes i think are some what related because it popped up at the same time for me and someone else as well.

 

Had both of these on my car two weeks ago, replced the sensor($30) and cleaned my terminals and all is good.

Mat

 

which sensor?

could it be that i need a new fuel pump?

because my car almost stalls when idling but doesnt and when i put it in neutral when breaking my car works fine. when im driving i feel as if i have to press on the gas pedel too much and feel as if im going no where. LOL