Existing vehicles are computer-controlled, and a survey thing is needed to access codes.
Follow the scan tool manufacturer's instructions or on-screen display to read any stored diagnostic codes.4. Select "erase" or "delete" codes (as applicable to your specific scan tool model) from the scan tool menu to erase OBD codes from the Jeep's computer memory.
2. Start the Jeep and allow a few seconds for the scan tool to communicate with the vehicle computer.
3.On-board diagnostic (OBD) codes are cleared from a Jeep using an OBD sweep belongings connected to the vehicle's personal computer control system. The vehicle control system consists of a computer and various sensors that monitor engine conditions. Information from sensors allows the computer to adjust various systems for optimum engine performance. In the event that any sensor reading is beyond normal limits, the computer will illuminate the "check engine" light and record a code to document the problem. The OBD scan tool connects to the computer and can both read and erase codes.
