PIDs

PID-Code	Checksum Byte	Register Name	Decoding	Unit/Mapping	Description
0x01	0x38	N	(((val[1] & 0xF) << 8) | val[0]) * 4	RPM	Engine Revolution
0x02	0x08	MAP	val[0] / 8	"Hg	Manifold Absolute Pressure
0x03	0x18	BP	val[0] / 8	"Hg	Barometric Pressure
0x04	0x68	SAFTOT	val[0] / 4	Degrees	Total spark advance
0x05	0x78	IACT	((val[1] & 0xF) << 8) | val[0]	A/D count	ACT Sensor (Air Temperature)
0x06	0x48	IECT	((val[1] & 0xF) << 8) | val[0]	A/D count	ECT Sensor (Cooling Temperature)
0x07	0x58	IEGR	((val[1] & 0xF) << 8) | val[0]	A/D count	EVP or EPT sensor
0x08	0xA8	IEGO1	((val[1] & 0xF) << 8) | val[0]	A/D count
0x09	0xB8	ITP	((val[1] & 0xF) << 8) | val[0]	A/D count; (*4.875 for mV?)	Throttle Position
0x0A	0x88				not used
0x0B	0x98	IVCAL	((val[1] & 0xF) << 8) | val[0]	A/D count	Calibration input voltage
0x0C	0xE8	FUELPW1	(((val[1] & 0xF) << 8) | val[0]) * 4	clock ticks	Fuel Pulsewidth
0x0D	0xF8	LAMBSE1	(((val[1] & 0xF) << 8) | val[0]) / 2048	-	LAMBDA equivalence ratio
0x0E	0xC8	APT	val[0]	0xFF = Closed; 0x00 = Partly open; 0x01 = Open	Throttle Mode Flag
0x0F	0xD8	ACT	val[0] * 2	Degrees Fahrenheit	ACT = Air charge temperature
0x10	0x38	ECT	val[0] * 2	Degrees Fahrenheit	ECT = Engine Coolant Temperature
0x11	0x28	VBAT	val[0]/16	V	Supply Voltage
0x12	0x18	MAP_FREQ			Integrated value of frequency in Hertz of the output of SCAP sensor.
0x13	0x08	EGRDC			EGR Duty Cycle
0x15	0x68	ISCDTY	((val[1] & 0xF) << 8) | val[0]	EEC-IV count	Idle speed control duty cycle
0x16	0x58				not used
0x17	0x48	VSBAR	val[0] / 2	MPH	Filtered vehicle speed
0x18	0xB8	VS	val[0] / 32	MPH	?
0x19					not used
0x1A	0x98	BITMAP_0	val[1] & 0x04	1 = Canister Purge has non zero duty cycle
			val[1] & 0x08	1 = A/C clutch is disengaged
			val[0] & 0x40	1 = Not in neutral or park
			val[0] & 0x80	1 = Fuel pump on
0x1B	0x88	BITMAP_1	val[1] & 0x01	1 = Alternate shift mode/overdrive cancel is selected
			val[0] & 0x01	1 = In closed loop fuel control
			val[0] & 0x02	1 = Power Steering preassure switch is closed
			val[0] & 0x08	1 = Driver has selected A/C
			val[0] & 0x10	1 = Ignition Diagnostic Monitor EEC module input is high
			val[0] & 0x20	1 = Output AM1 (Air Management 1 solenoid) is on
			val[0] & 0x80	1 = Output AM2 is on
0x1C	?	?	val[0]	?	0xFF = Engine running and test setup; 0x02 = Engine off in car
0x1D					not used
0x26	0x68	?	((val[1] & 0xF) << 8)	A/D Count	Air Flow Meter
0x27	0x78	LOAD			Normalized air charge value
0x28	0x88	KAMRF1			Adaptive fuel correction
0x29	?	?	val[0]	?	values between 13 and 16
0x2A					Desired RPM
0x2B	0xB8	RATCH			Lowest filtered throttle position
0x2C	?	?	((val[1] & 0xF) << 8)	?	2048 off; start falls around 1000 and slowly rises back to 2000
0x2D					Time since startup in seconds
0x2E					OCC
0x2F					Neutral/Drive input
0x30					Converter Clutch
0x31					not used
0x32					Command Gear
0x33					not used
0x34					not used
0x35					ETV Monitor Voltage
0x36					EPC Pressure
0x37					Transmission Oil Temperature
0x38					PRNDL Position