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10% Coupon Code = BUY10
10% Coupon Code = BUY10

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10 OBD Modes

Mode $01 — Request current powertrain diagnostic data 

  • The purpose of Mode $01 data is to have access to current live powertrain data values.

Mode $02—Request freeze frame information

  • The purpose of Mode $02 is to allow access to emissions-related data that is stored at the time the related code was set.

Mode $03—Request emissions-related diagnostic trouble codes

  • The purpose of Mode $03 is for the external test equipment (scan tool) to have access to emissions-related Diagnostic Trouble Codes (DTCs) that are stored in emissions-related modules.

Mode $04—Clear/reset emissions-related diagnostic information

  • The purpose of Mode $04 is to clear the emissions-related diagnostic information from the modules that have stored this information. This function includes clearing not only the DTCs; but also the freeze-frame data, all stored test data, and it resets all monitors and turns off the check engine light.

Mode $05—Request oxygen sensor monitoring test results

  • The purpose of this mode is to allow access to the engine control module’s oxygen sensor monitoring test results. The same information can be obtained by the use of Mode $06. The Mode $05 information is not available on vehicles using the Controller Area Network (CAN) system. For those cars, you’ll need to go directly to Mode $06.

Mode $06—Request on-board monitoring test results for specific monitored systems

  • The purpose of Mode $06 is to allow access to the test results for on-board diagnostic monitoring tests of specific components that are both continuously monitored (misfire monitoring) and non-continuously monitored systems. The Mode $06 test information has nothing standard between vehicle makes or models. The only way to understand what you are seeing is to either have a scan tool that defines all of the data for you, or to print out the Mode $06 information from service information then compare the printed data to the scan tool data.

Mode $07 — Request emission-related diagnostic trouble codes detected during current or last completed driving cycle

  • The purpose of Mode $07 data is