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- 2009.01.14 OBD 2 PIDs
The table below shows the standard OBD-II PIDs as defined by SAE J1979. The expected response for each PID is given, along with information on how to translate the response into meaningful data. Again, not all vehicles will support all PIDs and there can be manufacturer-defined custom PIDs that are not defined in the OBD-II standard.
Note that modes 1 and 2 are basically identical, except that Mode 1 provides current information, whereas Mode 2 provides a snapshot of the same data taken at the point when the last diagnostic trouble code was set. The exceptions are PID 01, which is only available in Mode 1, and PID 02, which is only available in Mode 2. If Mode 2 PID 02 returns zero, then there is no snapshot and all other Mode 2 data is meaningless.
Mode (hex) |
PID (hex) |
Data bytes returned | Description | Min value | Max value | Units | Formula |
---|---|---|---|---|---|---|---|
01 | 00 | 4 | PIDs supported | Bit encoded [A7..D0] == [PID 0x01..PID 0x20] | |||
01 | 01 | 4 | Monitor status since DTCs cleared. (Includes malfunction indicator lamp (MIL) status and number of DTCs.) | Bit encoded. See below. | |||
01 | 02 | 8 | Freeze DTC | ||||
01 | 03 | 2 | Fuel system status | Bit encoded. See below. | |||
01 | 04 | 1 | Calculated engine load value | 0 | 100 | % | A*100/255 |
01 | 05 | 1 | Engine coolant temperature | -40 | 215 | °C | A-40 |
01 | 06 | 1 | Short term fuel % trim?Bank 1 | -100 (Rich) | 99.22 (Lean) | % | (A-128) * 100/128 |
01 | 07 | 1 | Long term fuel % trim?Bank 1 | -100 (Rich) | 99.22 (Lean) | % | (A-128) * 100/128 |
01 | 08 | 1 | Short term fuel % trim?Bank 2 | -100 (Rich) | 99.22 (Lean) | % | (A-128) * 100/128 |
01 | 09 | 1 | Long term fuel % trim?Bank 2 | -100 (Rich) | 99.22 (Lean) | % | (A-128) * 100/128 |
01 | 0A | 1 | Fuel pressure | 0 | 765 | kPa (gauge) | A*3 |
01 | 0B | 1 | Intake manifold pressure | 0 | 255 | kPa (absolute) | A |
01 | 0C | 2 | Engine RPM | 0 | 16,383.75 | rpm | ((A*256)+B)/4 |
01 | 0D | 1 | Vehicle speed | 0 | 255 | km/h | A |
01 | 0E | 1 | Timing advance | -64 | 63.5 | ° relative to #1 cylinder | A/2 - 64 |
01 | 0F | 1 | Intake air temperature | -40 | 215 | °C | A-40 |
01 | 10 | 2 | MAF air flow rate | 0 | 655.35 | g/s | ((256*A)+B) / 100 |
01 | 11 | 1 | Throttle position | 0 | 100 | % | A*100/255 |
01 | 12 | 1 | Commanded secondary air status | Bit encoded. See below. | |||
01 | 13 | 1 | Oxygen sensors present | [A0..A3] == Bank 1, Sensors 1-4. [A4..A7] == Bank 2... | |||
01 | 14 | 2 | Bank 1, Sensor 1: Oxygen sensor voltage, Short term fuel trim |
0 0 |
1.275 99.2 |
Volts % |
A * 0.005 (B-128) * 100/128 (if B==0xFF, sensor is not used in trim calc) |
01 | 15 | 2 | Bank 1, Sensor 2: Oxygen sensor voltage, Short term fuel trim |
0 0 |
1.275 99.2 |
Volts % |
A * 0.005 (B-128) * 100/128 (if B==0xFF, sensor is not used in trim calc) |
01 | 16 | 2 | Bank 1, Sensor 3: Oxygen sensor voltage, Short term fuel trim |
0 0 |
1.275 99.2 |
Volts % |
A * 0.005 (B-128) * 100/128 (if B==0xFF, sensor is not used in trim calc) |
01 | 17 | 2 | Bank 1, Sensor 4: Oxygen sensor voltage, Short term fuel trim |
0 0 |
1.275 99.2 |
Volts % |
A * 0.005 (B-128) * 100/128 (if B==0xFF, sensor is not used in trim calc) |
01 | 18 | 2 | Bank 2, Sensor 1: Oxygen sensor voltage, Short term fuel trim |
0 0 |
1.275 99.2 |
Volts % |
A * 0.005 (B-128) * 100/128 (if B==0xFF, sensor is not used in trim calc) |
01 | 19 | 2 | Bank 2, Sensor 2: Oxygen sensor voltage, Short term fuel trim |
0 0 |
1.275 99.2 |
Volts % |
A * 0.005 (B-128) * 100/128 (if B==0xFF, sensor is not used in trim calc) |
01 | 1A | 2 | Bank 2, Sensor 3: Oxygen sensor voltage, Short term fuel trim |
0 0 |
1.275 99.2 |
Volts % |
A * 0.005 (B-128) * 100/128 (if B==0xFF, sensor is not used in trim calc) |
01 | 1B | 2 | Bank 2, Sensor 4: Oxygen sensor voltage, Short term fuel trim |
0 0 |
1.275 99.2 |
Volts % |
A * 0.005 (B-128) * 100/128 (if B==0xFF, sensor is not used in trim calc) |
01 | 1C | 1 | OBD standards this vehicle conforms to | Bit encoded. See below. | |||
01 | 1D | 1 | Oxygen sensors present | Similar to PID 13, but [A0..A7] == [B1S1, B1S2, B2S1, B2S2, B3S1, B3S2, B4S1, B4S2] | |||
01 | 1E | 1 | Auxiliary input status | A0 == Power Take Off (PTO) status (1 == active) [A1..A7] not used |
|||
01 | 1F | 2 | Run time since engine start | 0 | 65,535 | seconds | (A*256)+B |
01 | 20 | 4 | PIDs supported 21-40 | Bit encoded [A7..D0] == [PID 0x21..PID 0x40] | |||
01 | 21 | 2 | Distance traveled with malfunction indicator lamp (MIL) on | 0 | 65,535 | km | (A*256)+B |
01 | 22 | 2 | Fuel Rail Pressure (relative to manifold vacuum) | 0 | 5177.265 | kPa | ((A*256)+B) * 0.079 |
01 | 23 | 2 | Fuel Rail Pressure (diesel) | 0 | 655350 | kPa (gauge) | ((A*256)+B) * 10 |
01 | 24 | 4 | O2S1_WR_lambda(1): Equivalence Ratio Voltage |
0 0 |
2 8 |
N/A V |
((A*256)+B)*0.0000305 ((C*256)+D)*0.000122 |
01 | 25 | 4 | O2S2_WR_lambda(1): Equivalence Ratio Voltage |
0 0 |
2 8 |
N/A V |
((A*256)+B)*0.0000305 ((C*256)+D)*0.000122 |
01 | 26 | 4 | O2S3_WR_lambda(1): Equivalence Ratio Voltage |
0 0 |
2 8 |
N/A V |
((A*256)+B)*0.0000305 ((C*256)+D)*0.000122 |
01 | 27 | 4 | O2S4_WR_lambda(1): Equivalence Ratio Voltage |
0 0 |
2 8 |
N/A V |
((A*256)+B)*0.0000305 ((C*256)+D)*0.000122 |
01 | 28 | 4 | O2S5_WR_lambda(1): Equivalence Ratio Voltage |
0 0 |
2 8 |
N/A V |
((A*256)+B)*0.0000305 ((C*256)+D)*0.000122 |
01 | 29 | 4 | O2S6_WR_lambda(1): Equivalence Ratio Voltage |
0 0 |
2 8 |
N/A V |
((A*256)+B)*0.0000305 ((C*256)+D)*0.000122 |
01 | 2A | 4 | O2S7_WR_lambda(1): Equivalence Ratio Voltage |
0 0 |
2 8 |
N/A V |
((A*256)+B)*0.0000305 ((C*256)+D)*0.000122 |
01 | 2B | 4 | O2S8_WR_lambda(1): Equivalence Ratio Voltage |
0 0 |
2 8 |
N/A V |
((A*256)+B)*0.0000305 ((C*256)+D)*0.000122 |
01 | 2C | 1 | Commanded EGR | 0 | 100 | % | 100*A/255 |
01 | 2D | 1 | EGR Error | -100 | 99.22 | % | A*0.78125 - 100 |
01 | 2E | 1 | Commanded evaporative purge | 0 | 100 | % | 100*A/255 |
01 | 2F | 1 | Fuel Level Input | 0 | 100 | % | 100*A/255 |
01 | 30 | 1 | # of warm-ups since codes cleared | 0 | 255 | N/A | A |
01 | 31 | 2 | Distance traveled since codes cleared | 0 | 65,535 | km | (A*256)+B |
01 | 32 | 2 | Evap. System Vapor Pressure | -8,192 | 8,192 | Pa | ((A*256)+B)/4 - 8,192 |
01 | 33 | 1 | Barometric pressure | 0 | 255 | kPa (Absolute) | A |
01 | 34 | 4 | O2S1_WR_lambda(1): Equivalence Ratio Current |
0 -128 |
2 128 |
N/A mA |
((A*256)+B)*0.0000305 ((C*256)+D)*0.00390625 - 128 |
01 | 35 | 4 | O2S2_WR_lambda(1): Equivalence Ratio Current |
0 -128 |
2 128 |
N/A mA |
((A*256)+B)*0.0000305 ((C*256)+D)*0.00390625 - 128 |
01 | 36 | 4 | O2S3_WR_lambda(1): Equivalence Ratio Current |
0 -128 |
2 128 |
N/A mA |
((A*256)+B)*0.0000305 ((C*256)+D)*0.00390625 - 128 |
01 | 37 | 4 | O2S4_WR_lambda(1): Equivalence Ratio Current |
0 -128 |
2 128 |
N/A mA |
((A*256)+B)*0.0000305 ((C*256)+D)*0.00390625 - 128 |
01 | 38 | 4 | O2S5_WR_lambda(1): Equivalence Ratio Current |
0 -128 |
2 128 |
N/A mA |
((A*256)+B)*0.0000305 ((C*256)+D)*0.00390625 - 128 |
01 | 39 | 4 | O2S6_WR_lambda(1): Equivalence Ratio Current |
0 -128 |
2 128 |
N/A mA |
((A*256)+B)*0.0000305 ((C*256)+D)*0.00390625 - 128 |
01 | 3A | 4 | O2S7_WR_lambda(1): Equivalence Ratio Current |
0 -128 |
2 128 |
N/A mA |
((A*256)+B)*0.0000305 ((C*256)+D)*0.00390625 - 128 |
01 | 3B | 4 | O2S8_WR_lambda(1): Equivalence Ratio Current |
0 -128 |
2 128 |
N/A mA |
((A*256)+B)*0.0000305 ((C*256)+D)*0.00390625 - 128 |
01 | 3C | 2 | Catalyst Temperature Bank 1, Sensor 1 |
-40 | 6,513.5 | °C | ((A*256)+B)/10 - 40 |
01 | 3D | 2 | Catalyst Temperature Bank 2, Sensor 1 |
-40 | 6,513.5 | °C | ((A*256)+B)/10 - 40 |
01 | 3E | 2 | Catalyst Temperature Bank 1, Sensor 2 |
-40 | 6,513.5 | °C | ((A*256)+B)/10 - 40 |
01 | 3F | 2 | Catalyst Temperature Bank 2, Sensor 2 |
-40 | 6,513.5 | °C | ((A*256)+B)/10 - 40 |
01 | 40 | 4 | PIDs supported 41-60 | Bit encoded [A7..D0] == [PID 0x41..PID 0x60] | |||
01 | 41 | 4 | Monitor status this drive cycle | Bit encoded. See below. | |||
01 | 42 | 2 | Control module voltage | 0 | 65.535 | V | ((A*256)+B)/1000 |
01 | 43 | 2 | Absolute load value | 0 | 25,700 | % | ((A*256)+B)*100/255 |
01 | 44 | 2 | Command equivalence ratio | 0 | 2 | N/A | ((A*256)+B)*0.0000305 |
01 | 45 | 1 | Relative throttle position | 0 | 100 | % | A*100/255 |
01 | 46 | 1 | Ambient air temperature | -40 | 215 | °C | A-40 |
01 | 47 | 1 | Absolute throttle position B | 0 | 100 | % | A*100/255 |
01 | 48 | 1 | Absolute throttle position C | 0 | 100 | % | A*100/255 |
01 | 49 | 1 | Accelerator pedal position D | 0 | 100 | % | A*100/255 |
01 | 4A | 1 | Accelerator pedal position E | 0 | 100 | % | A*100/255 |
01 | 4B | 1 | Accelerator pedal position F | 0 | 100 | % | A*100/255 |
01 | 4C | 1 | Commanded throttle actuator | 0 | 100 | % | A*100/255 |
01 | 4D | 2 | Time run with MIL on | 0 | 65,535 | minutes | (A*256)+B |
01 | 4E | 2 | Time since trouble codes cleared | 0 | 65,535 | minutes | (A*256)+B |
01 | 51 | 1 | Fuel Type | From fuel type table see below | |||
01 | 52 | 1 | Ethanol fuel % | 0 | 100 | % | A*100/255 |
01 | C3 | ? | ? | ? | ? | ? | Returns numerous data, including Drive Condition ID and Engine Speed* |
01 | C4 | ? | ? | ? | ? | ? | B5 is Engine Idle Request B6 is Engine Stop Request* |
02 | 02 | 2 | Freeze frame trouble code | BCD encoded, See below. | |||
03 | N/A | n*6 | Request trouble codes | 3 codes per message frame, BCD encoded. See below. | |||
04 | N/A | 0 | Clear trouble codes / Malfunction indicator lamp (MIL) / Check engine light | Clears all stored trouble codes and turns the MIL off. | |||
05 | 0100 | OBD Monitor IDs supported ($01 - $20) | |||||
05 | 0101 | O2 Sensor Monitor Bank 1 Sensor 1 | 0.00 | 1.275 | Volts | 0.005 Rich to lean sensor threshold voltage | |
05 | 0102 | O2 Sensor Monitor Bank 1 Sensor 2 | 0.00 | 1.275 | Volts | 0.005 Rich to lean sensor threshold voltage | |
05 | 0103 | O2 Sensor Monitor Bank 1 Sensor 3 | 0.00 | 1.275 | Volts | 0.005 Rich to lean sensor threshold voltage | |
05 | 0104 | O2 Sensor Monitor Bank 1 Sensor 4 | 0.00 | 1.275 | Volts | 0.005 Rich to lean sensor threshold voltage | |
05 | 0105 | O2 Sensor Monitor Bank 2 Sensor 1 | 0.00 | 1.275 | Volts | 0.005 Rich to lean sensor threshold voltage | |
05 | 0106 | O2 Sensor Monitor Bank 2 Sensor 2 | 0.00 | 1.275 | Volts | 0.005 Rich to lean sensor threshold voltage | |
05 | 0107 | O2 Sensor Monitor Bank 2 Sensor 3 | 0.00 | 1.275 | Volts | 0.005 Rich to lean sensor threshold voltage | |
05 | 0108 | O2 Sensor Monitor Bank 2 Sensor 4 | 0.00 | 1.275 | Volts | 0.005 Rich to lean sensor threshold voltage | |
05 | 0109 | O2 Sensor Monitor Bank 3 Sensor 1 | 0.00 | 1.275 | Volts | 0.005 Rich to lean sensor threshold voltage | |
05 | 010A | O2 Sensor Monitor Bank 3 Sensor 2 | 0.00 | 1.275 | Volts | 0.005 Rich to lean sensor threshold voltage | |
05 | 010B | O2 Sensor Monitor Bank 3 Sensor 3 | 0.00 | 1.275 | Volts | 0.005 Rich to lean sensor threshold voltage | |
05 | 010C | O2 Sensor Monitor Bank 3 Sensor 4 | 0.00 | 1.275 | Volts | 0.005 Rich to lean sensor threshold voltage | |
05 | 010D | O2 Sensor Monitor Bank 4 Sensor 1 | 0.00 | 1.275 | Volts | 0.005 Rich to lean sensor threshold voltage | |
05 | 010E | O2 Sensor Monitor Bank 4 Sensor 2 | 0.00 | 1.275 | Volts | 0.005 Rich to lean sensor threshold voltage | |
05 | 010F | O2 Sensor Monitor Bank 4 Sensor 3 | 0.00 | 1.275 | Volts | 0.005 Rich to lean sensor threshold voltage | |
05 | 0110 | O2 Sensor Monitor Bank 4 Sensor 4 | 0.00 | 1.275 | Volts | 0.005 Rich to lean sensor threshold voltage | |
05 | 0201 | O2 Sensor Monitor Bank 1 Sensor 1 | 0.00 | 1.275 | Volts | 0.005 Lean to Rich sensor threshold voltage | |
05 | 0202 | O2 Sensor Monitor Bank 1 Sensor 2 | 0.00 | 1.275 | Volts | 0.005 Lean to Rich sensor threshold voltage | |
05 | 0203 | O2 Sensor Monitor Bank 1 Sensor 3 | 0.00 | 1.275 | Volts | 0.005 Lean to Rich sensor threshold voltage | |
05 | 0204 | O2 Sensor Monitor Bank 1 Sensor 4 | 0.00 | 1.275 | Volts | 0.005 Lean to Rich sensor threshold voltage | |
05 | 0205 | O2 Sensor Monitor Bank 2 Sensor 1 | 0.00 | 1.275 | Volts | 0.005 Lean to Rich sensor threshold voltage | |
05 | 0206 | O2 Sensor Monitor Bank 2 Sensor 2 | 0.00 | 1.275 | Volts | 0.005 Lean to Rich sensor threshold voltage | |
05 | 0207 | O2 Sensor Monitor Bank 2 Sensor 3 | 0.00 | 1.275 | Volts | 0.005 Lean to Rich sensor threshold voltage | |
05 | 0208 | O2 Sensor Monitor Bank 2 Sensor 4 | 0.00 | 1.275 | Volts | 0.005 Lean to Rich sensor threshold voltage | |
05 | 0209 | O2 Sensor Monitor Bank 3 Sensor 1 | 0.00 | 1.275 | Volts | 0.005 Lean to Rich sensor threshold voltage | |
05 | 020A | O2 Sensor Monitor Bank 3 Sensor 2 | 0.00 | 1.275 | Volts | 0.005 Lean to Rich sensor threshold voltage | |
05 | 020B | O2 Sensor Monitor Bank 3 Sensor 3 | 0.00 | 1.275 | Volts | 0.005 Lean to Rich sensor threshold voltage | |
05 | 020C | O2 Sensor Monitor Bank 3 Sensor 4 | 0.00 | 1.275 | Volts | 0.005 Lean to Rich sensor threshold voltage | |
05 | 020D | O2 Sensor Monitor Bank 4 Sensor 1 | 0.00 | 1.275 | Volts | 0.005 Lean to Rich sensor threshold voltage | |
05 | 020E | O2 Sensor Monitor Bank 4 Sensor 2 | 0.00 | 1.275 | Volts | 0.005 Lean to Rich sensor threshold voltage | |
05 | 020F | O2 Sensor Monitor Bank 4 Sensor 3 | 0.00 | 1.275 | Volts | 0.005 Lean to Rich sensor threshold voltage | |
05 | 0210 | O2 Sensor Monitor Bank 4 Sensor 4 | 0.00 | 1.275 | Volts | 0.005 Lean to Rich sensor threshold voltage | |
09 | 02 | 5x5 | Vehicle identification number (VIN) | Returns 5 lines, A is line ordering flag, B-E ASCII coded VIN digits. |
In the formula column, letters A, B, C, etc. represent the decimal equivalent of the first, second, third, etc. bytes of data. Where a (?) appears, contradictory or incomplete information was available. Someone with a copy of the 2006 SAE HS-3000 should fact-check these.