Discussion
Match each diagnostic term with its meaning.
List I
A. Freeze frame
B. Readiness monitor
C. Long term fuel trim
List II
P. learned correction retained in memory
Q. conditions stored when the fault occurred
R. flag showing a self test has run
Select the correct match.
Answer: D
Freeze frame captures the moment, the readiness monitor says whether a test has run, and long term trim is the stored correction. All three appear in a generic scan tool and each answers a different question. Working the distinction through on a single concrete case fixes it more firmly than any rule of thumb. Naming what changes and what stays the same is the reliable route through questions of this shape. A limit that survives making every external component ideal is an intrinsic one, and worth knowing for that reason.
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