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Mode 01 • PID C4

OBD2 PID 01C4

?

Definition

Mode
01 (hex)
PID
C4 (hex)
Data bytes
?
Formula
B5 is Engine Idle Request B6 is Engine Stop Request*
Range
? – ? ?
Units
?

How to read PID 01C4

Send mode 01 with PID C4 over OBD-II. The ECU returns ? data byte(s), decoded with B5 is Engine Idle Request B6 is Engine Stop Request* (A, B, C, D are the returned bytes in order). The result is “?” in ?. This is standard SAE J1979 data supported by most OBD-II scan tools and loggers.

Why it matters for tuning

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