: Codes PC0300, PC1139, PZ2719

07-02-04, 11:49 AM
Hey guys i just puylled these codes out of my 96 deville anyone got any ideas what they are? thanks

07-02-04, 01:04 PM
PC0300 Misfire diagnostic code - indicates a cylinder is misfiring
PC1139 Preconverter O2 sensor lack of activity - possibly caused by the misfire
PZ2719 Universal theft deterent - trunk tamper switch fault