Diagnostic Mode 02 - Read Operating Conditions: Notes

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When an emissions - related fault (pending DTC, visible in mode 07) is first detected, operating conditions are stored. Mode 02 makes it possible to access this freeze frame data as soon as this fault is shown in mode 03. Each control module only shows freeze frame data for one fault via mode 02. Therefore, there are two priority levels. If there is a malfunction with higher priority, the freeze frame data is overwritten.

-- Fault with higher priority: Misfire malfunction or fuel trim malfunction.

-- Fault with normal priority: All other emissions - related faults.

NOTE:

Depending on scan tool and protocol used, the information in diagnostic mode 02 may be referred to by different names such as Test - ID, Hex - ID, Component - ID, or On - Board Diagnostic Monitor Identifier (OBDMID).