Freeze Frame Data: Description

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Freeze frame data allows access to emission related values from specific generic parameter identification (PIDs). These values are stored the instant an emission related diagnostic trouble code (DTC) is stored in continuous memory. This provides a snapshot of the conditions that were present when the DTC was stored. Once one set of freeze frame data is stored, this data remains in memory even if another emission related DTC is stored. When a DTC associated with the freeze frame is erased or a keep alive memory (KAM) reset is carried out, new freeze frame data can be stored. In the event of multiple emission related DTCs in memory, always note the DTC for the freeze frame data.

FREEZE FRAME DATA TABLE

PID Number	Acronym	Description	Measurement Units
02	DTCFZ	DTC Which Stored Freeze Frame	#
04	LOAD	Calculated Load Value	Percent
05	ECT	Engine Coolant Temperature	Celsius/Degrees F
0B	MAP	Manifold Absolute Pressure	kPa
0C	RPM	Engine RPM	RPM
0D	VSS	Vehicle Speed	MPH
0F	IAT	Intake Air Temperature	Degrees F
10	MAF	Air Flow Rate	Grams per second
1E	PTO	Power Take Off Status	Mode
1F	RUNTM	Time Since Engine Start	Seconds
2C	EGR_PCT	Commanded EGR	Percent
2D	EGR_ERR	EGR Error	Percent
2F	FLI	Fuel Level Input	Percent
30	WARM_UPS	# Of Warm-ups Since Codes Cleared	#
31	CLR_DIST	Distance Since Codes Cleared	Kilometers
33	BARO	Barometric Pressure	in-Hg
42	VPWR	Control Module Voltage	Volts
49	APP_D	Accelerator Pedal Position D	Percent
4A	APP_E	Accelerator Pedal Position E	Percent
4B	APP_F	Accelerator Pedal Position F	Percent