Diagnostic Test Modes - CEN-TECH 62120 Owner's Manual & Safety Instructions

Diagnostic Test Modes

Diagnostic Test Modes as described in the latest OBD II standard SAE J1979.
Note: Not all Modes are
supported by all vehicles.
$01 - Request Current Powertrain
Diagnostic Data
$02 - Request Powertrain
Freeze Frame Data
$03 - Request Emission-Related
Stored DTCs
$04 - Clear/Reset Emission-Related
Diagnostic Information
$05 - Request Oxygen Sensor Monitoring
Test Results (2007 and older vehicles only)
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$06 - Request On-Board Monitoring Test
Results for Specific Monitored Systems
$07 - Request Emission-Related
Stored DTCs Detected During Current
or Last Completed Driving Cycle
$08 - Request Control of On-Board
System, Test or Component
$09 - Request Vehicle Information
$0A - Request Emission-Related
Permanent DTCs
Item 62120