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Readiness Code: Description

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Readiness code must be generated whenever ECM memory is cleared, ECM loses battery voltage or is replaced. Readiness code appears as an 8-digit display in diagnostic function MEASURING VALUE BLOCK 086, display field 1 of scan tool. Each of the 8 digits is related to a specific exhaust related system. During a test sequence OBD system checks function of each of the 8 systems. OBD system checks components and generates Readiness Code at regular intervals during normal driving.

NOTE: Not all eight diagnostic functions in Readiness Code are used. See Figure.
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