Command Tables

Mode 01

PID	Name	Description
00	PIDS_A	Supported PIDs [01-20]
01	STATUS	Status since DTCs cleared
02	<unsupported>	<unsupported>
03	FUEL_STATUS	Fuel System Status
04	ENGINE_LOAD	Calculated Engine Load
05	COOLANT_TEMP	Engine Coolant Temperature
06	SHORT_FUEL_TRIM_1	Short Term Fuel Trim - Bank 1
07	LONG_FUEL_TRIM_1	Long Term Fuel Trim - Bank 1
08	SHORT_FUEL_TRIM_2	Short Term Fuel Trim - Bank 2
09	LONG_FUEL_TRIM_2	Long Term Fuel Trim - Bank 2
0A	FUEL_PRESSURE	Fuel Pressure
0B	INTAKE_PRESSURE	Intake Manifold Pressure
0C	RPM	Engine RPM
0D	SPEED	Vehicle Speed
0E	TIMING_ADVANCE	Timing Advance
0F	INTAKE_TEMP	Intake Air Temp
10	MAF	Air Flow Rate (MAF)
11	THROTTLE_POS	Throttle Position
12	AIR_STATUS	Secondary Air Status
13	<unsupported>	<unsupported>
14	O2_B1S1	O2: Bank 1 - Sensor 1 Voltage
15	O2_B1S2	O2: Bank 1 - Sensor 2 Voltage
16	O2_B1S3	O2: Bank 1 - Sensor 3 Voltage
17	O2_B1S4	O2: Bank 1 - Sensor 4 Voltage
18	O2_B2S1	O2: Bank 2 - Sensor 1 Voltage
19	O2_B2S2	O2: Bank 2 - Sensor 2 Voltage
1A	O2_B2S3	O2: Bank 2 - Sensor 3 Voltage
1B	O2_B2S4	O2: Bank 2 - Sensor 4 Voltage
1C	OBD_COMPLIANCE	OBD Standards Compliance
1D	<unsupported>	<unsupported>
1E	<unsupported>	<unsupported>
1F	RUN_TIME	Engine Run Time
20	PIDS_B	Supported PIDs [21-40]
21	DISTANCE_W_MIL	Distance Traveled with MIL on
22	FUEL_RAIL_PRESSURE_VAC	Fuel Rail Pressure (relative to vacuum)
23	FUEL_RAIL_PRESSURE_DIRECT	Fuel Rail Pressure (direct inject)
24	O2_S1_WR_VOLTAGE	02 Sensor 1 WR Lambda Voltage
25	O2_S2_WR_VOLTAGE	02 Sensor 2 WR Lambda Voltage
26	O2_S3_WR_VOLTAGE	02 Sensor 3 WR Lambda Voltage
27	O2_S4_WR_VOLTAGE	02 Sensor 4 WR Lambda Voltage
28	O2_S5_WR_VOLTAGE	02 Sensor 5 WR Lambda Voltage
29	O2_S6_WR_VOLTAGE	02 Sensor 6 WR Lambda Voltage
2A	O2_S7_WR_VOLTAGE	02 Sensor 7 WR Lambda Voltage
2B	O2_S8_WR_VOLTAGE	02 Sensor 8 WR Lambda Voltage
2C	COMMANDED_EGR	Commanded EGR
2D	EGR_ERROR	EGR Error
2E	EVAPORATIVE_PURGE	Commanded Evaporative Purge
2F	FUEL_LEVEL	Fuel Level Input
30	WARMUPS_SINCE_DTC_CLEAR	Number of warm-ups since codes cleared
31	DISTANCE_SINCE_DTC_CLEAR	Distance traveled since codes cleared
32	EVAP_VAPOR_PRESSURE	Evaporative system vapor pressure
33	BAROMETRIC_PRESSURE	Barometric Pressure
34	O2_S1_WR_CURRENT	02 Sensor 1 WR Lambda Current
35	O2_S2_WR_CURRENT	02 Sensor 2 WR Lambda Current
36	O2_S3_WR_CURRENT	02 Sensor 3 WR Lambda Current
37	O2_S4_WR_CURRENT	02 Sensor 4 WR Lambda Current
38	O2_S5_WR_CURRENT	02 Sensor 5 WR Lambda Current
39	O2_S6_WR_CURRENT	02 Sensor 6 WR Lambda Current
3A	O2_S7_WR_CURRENT	02 Sensor 7 WR Lambda Current
3B	O2_S8_WR_CURRENT	02 Sensor 8 WR Lambda Current
3C	CATALYST_TEMP_B1S1	Catalyst Temperature: Bank 1 - Sensor 1
3D	CATALYST_TEMP_B2S1	Catalyst Temperature: Bank 2 - Sensor 1
3E	CATALYST_TEMP_B1S2	Catalyst Temperature: Bank 1 - Sensor 2
3F	CATALYST_TEMP_B2S2	Catalyst Temperature: Bank 2 - Sensor 2
40	PIDS_C	Supported PIDs [41-60]
41	<unsupported>	<unsupported>
42	<unsupported>	<unsupported>
43	<unsupported>	<unsupported>
44	<unsupported>	<unsupported>
45	RELATIVE_THROTTLE_POS	Relative throttle position
46	AMBIANT_AIR_TEMP	Ambient air temperature
47	THROTTLE_POS_B	Absolute throttle position B
48	THROTTLE_POS_C	Absolute throttle position C
49	ACCELERATOR_POS_D	Accelerator pedal position D
4A	ACCELERATOR_POS_E	Accelerator pedal position E
4B	ACCELERATOR_POS_F	Accelerator pedal position F
4C	THROTTLE_ACTUATOR	Commanded throttle actuator
4D	RUN_TIME_MIL	Time run with MIL on
4E	TIME_SINCE_DTC_CLEARED	Time since trouble codes cleared
4F	<unsupported>	<unsupported>
50	MAX_MAF	Maximum value for mass air flow sensor
51	FUEL_TYPE	Fuel Type
52	ETHANOL_PERCENT	Ethanol Fuel Percent
53	EVAP_VAPOR_PRESSURE_ABS	Absolute Evap system Vapor Pressure
54	EVAP_VAPOR_PRESSURE_ALT	Evap system vapor pressure
55	SHORT_O2_TRIM_B1	Short term secondary O2 trim - Bank 1
56	LONG_O2_TRIM_B1	Long term secondary O2 trim - Bank 1
57	SHORT_O2_TRIM_B2	Short term secondary O2 trim - Bank 2
58	LONG_O2_TRIM_B2	Long term secondary O2 trim - Bank 2
59	FUEL_RAIL_PRESSURE_ABS	Fuel rail pressure (absolute)
5A	RELATIVE_ACCEL_POS	Relative accelerator pedal position
5B	HYBRID_BATTERY_REMAINING	Hybrid battery pack remaining life
5C	OIL_TEMP	Engine oil temperature
5D	FUEL_INJECT_TIMING	Fuel injection timing
5E	FUEL_RATE	Engine fuel rate
5F	<unsupported>	<unsupported>

Mode 02

Mode 02 commands are the same as mode 01, but are metrics from when the last DTC occurred (the freeze frame). To access them by name, simple prepend DTC_ to the Mode 01 command name.

import obd

obd.commands.RPM # the Mode 01 command
# vs.
obd.commands.DTC_RPM # the Mode 02 command

Mode 03

Mode 03 contains a single command GET_DTC which requests all diagnostic trouble codes from the vehicle's engine.

PID	Name	Description
N/A	GET_DTC	Get Diagnostic Trouble Codes

This command requests all diagnostic trouble codes from the vehicle's engine. The value field of the response object will contain a list of tuples, where each tuple contains the DTC, and a string description of that DTC (if available).

import obd
connection = obd.OBD()
r = connection.query(obd.commands.GET_DTC)
print(r.value)

'''
example output:
[
  ("P0030", "HO2S Heater Control Circuit"),
  ("P1367", "Unknown error code")
]
'''

Mode 04

PID	Name	Description
N/A	CLEAR_DTC	Clear DTCs and Freeze data

Mode 07

The return value will be encoded in the same structure as the Mode 03 GET_DTC command.

PID	Name	Description
N/A	GET_FREEZE_DTC	Get Freeze DTCs