DTC Library

Use this page to quickly define your retrieved OBD1 and OBD2 DTCs.

NOTE on OBD1: Our OBD1 database contains definitions for the most popular OBD1 Makes. Always consult your vehicle's service manual for code definitions not included here.

NOTE on OBD2: Our OBD2 database contains both Generic (P0, P2, some P3) and Manufacturer Specific (P1, some P3) DTCs. Because OBD II is an evolving system, new codes and definitions will be added as the system matures. Our database is constantly being updated to include more Manufacturer specific (P1) code definitions. Currently our database contains code definitions for 45 different vehicle makes. Always consult your vehicle's service manual for code definitions not included here or continue to check this site as we upload more P1 code definitions.