My 1999 gmc suburban engine light came on and i check the code it says 1999

[cARY S]

gmc suburban? 1999 gmc suburban p0452 emission control press sensor low why is that what that supposed to mean ? what shuld i do to fix it ? thanks

 

[wicked jester]

Most likley you have a bad O2 senser or your wiring to the senser has gone bad.

 

[MikeyDo]

Your gas tank has a pressure sensor to monitor vapor pressure. A loose or faulty gas cap is frequently the problem.