what do these codes mean?

[flaco]

i have a check engine light on and i went to auto zone to have it test (its free what can i say) anyway i have 2 1 is po 1400 and the other is po 0125 the guy there had no clue what they were so i thought maybe u guys would know

 

[L2RTSiAWD]

P0125=Insufficient Coolant Temperature for Closed Loop Fuel Control;
ECT Excessive Time to Closed Loop Fuel Control

P1400=Manifold Differential Pressure Sensor circuit.

 

[project15]

i have the 0125 on too. i think it means that the thermostat is bad. change that and tell me if it fixes it

 

[blcknspo0ln]

the T-stat would be my first bet. go swap it and stop being lazy! it takes 2 minutes to swap it out once you drain your coolant .

oh yea, use watter wetter after you refill your coolant.. it's good stuff

 

[jameswemm]

vfaq.com is your freind.
http://www.darklightning.com/gi/obdiidtcu.htm

 

[BulliT]

OBD II Engine Codes


Most error codes are in this link.

 

[flaco]

so its not the t-stat ill check out the sensor i guess

 

[flaco]

i looked up po 140 and it says bank 1 sensor 2 ?
o2 sensor circuit no activity detected (bank 1 sensor 2)

 

[blcknspo0ln]

that would be your rear O2 sensor. I'm too lazy to check if you have a turboback, but if you do.. that would be your reason