two codes

chuckssn95 · Aug 21, 2016

I just got my 96 3.6l mustang. It had a cel on when i got it. ( got it from my stepdad he didn't want it any more was gonna junk it.) that cel was for running to lean i forgot the code that was throwing. I replaced two vacuum hoses that where dry rotted. I cleared the code and it went away. I was driving the other day and the light came back on so i thought that it was for the same thing so i didnt bother to check it. Well i was driving the other night and it lost power but cam back right away. It did that a few more times. I hooked up my laptop and read the codes. Now it has a P0153( O2 Sensor Circuit Slow Response) and P0401 (Exhaust Gas Recirculation Flow Insufficient Detected). 200 thousand miles not sure how many because the odometer does not work. Would i need to replace O2 sensor? thanks for the help.

Nighttrain · Aug 21, 2016

More than likely, and the exhaust gas recirc is your egr valve. If you have a programmer, id delete the egr, and turn the function off with the computer.

chuckssn95 · Aug 29, 2016

Thanks for the help. I changed the 02 sensors and cleaned the EGR. Drove it around after doing this and it drove fine. Took it out later and it started to miss fire again and check CEL came on again. Code P0161 O2 Sensor Heater Circuit. Have no clue what this could be.