Diagnostic Aids

This DTC indicates that On Board Diagnostics II (OBD-II) system self-testing has not been completed. To clear DTC P1000, a complete drive cycle, with successful OBD-II system self-test must occur.

A drive cycle consists of vehicle warmed to normal engine temperature and operated in all speed ranges. After self-test successfully completes, SYSTEM PASS can be obtained from PCM.

DTC P1000 will set in PCM memory when any of the following conditions occur:

• Vehicle is new from factory and has not yet completed an OBD-II drive cycle.
• Battery or PCM has been disconnected.
• An OBD-II monitor has failed before completion of OBD-II drive cycle.
• PCM memory has been cleared with a scan tool.

1. DTC P1000: Check For Other DTCs
   
   If any other DTCs are present, service as necessary. If no other DTCs are present, go to next step.
2. Attempt To Clear DTC P1000
   
   Perform OBD-II drive cycle. See DRIVE CYCLES under ADDITIONAL SYSTEM FUNCTIONS in TESTS W/CODES - INTRODUCTION article. After drive cycle is completed, repeat QUICK TEST.