...PO440 and PO452 Fuel gauge not working properly. Several codes present. Replaced fuel pump asembly, cleared codes, drove for several days (short trips) these two codes returned PO440-EVAP SYSTEM NO ...
...po452, po440,po122. electrical problem? I have several engine codes po452, po440,po122. I know what they mean but have a few other problems that might be related. My flasher continually flashes when ...
Question about Chevrolet Cars & Trucks
po440,p0449,po452 and gm p1639 Maybe. Codes 121 and 122 are for the throttle position sensor circuit. Code 400 is EGR and codes 449 and 452 are for the EVAP system. Code 1639 is for a problem with the
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