Important Safety Notice
Appropriate repair methods and procedures are essential for the safe, reliable operation of all motor vehicles, as well as the personal safety of the individual doing the work. This article provides general directions for repairing vehicles with tested, effective techniques. Following them will help ensure reliability. There are numerous variations in procedures, techniques, tools, and parts for repairing vehicles, as well as in the skill of the individual doing the work. This article cannot possibly anticipate all such variations and provide advice or cautions as to each. Accordingly, anyone who departs from the instructions provided in this article must first establish that they compromise neither their personal safety nor the vehicle integrity by their choice of methods, tools, or parts.
Diagnostic Trouble Code (DTC) P1000 indicates that all the OBD monitors have not yet been successfully tested. In some areas, this DTC must be cleared to pass an inspection/maintenance test. The customer should be informed that the law specifies additional city and highway driving must be done to complete the check of the OBD system. This additional driving must occur before the vehicle is tested at the inspection/maintenance station. The amount of driving required varies with individual driving patterns. To complete this requirement in the shortest amount of time, refer to ON BOARD DIAGNOSTIC (OBD) DRIVE CYCLE .
It is not necessary to clear DTC P1000 from the PCM by driving the vehicle unless it is requested by the customer to pass an inspection/maintenance test.
The only way a DTC P1000 can be removed from memory is when all the OBD monitors are successfully completed.
DTC P1000 is set by the PCM under any of the following conditions:
- The vehicle is new from the factory and has not yet completed an OBD drive cycle.
- The battery or PCM has been disconnected.
- An OBD monitor failure had occurred before completion of an OBD drive cycle.
- The PCM DTCs have been cleared with a diagnostic tool as part of a repair process.
- The PCM has been flashed and the vehicle has not yet completed an OBD drive cycle.