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Mode
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PID | Data bytes returned | Description | Min value | Max value | Units | Formula |
| (hex) | (hex) | ||||||
| 1 | 0 | 4 | PIDs supported [01 – 20] | Bit encoded [A7..D0] == [PID $01..PID $20] See below. | |||
| 1 | 1 | 4 | Monitor status since DTCs cleared. (Includes malfunction indicator lamp (MIL) status and number of DTCs.) | Bit encoded. See below. | |||
| 1 | 3 | 2 | Fuel system status | Bit encoded. See below. | |||
| 1 | 4 | 1 | Calculated engine load value | 0 | 100 | % | A*100/255 |
| 1 | 5 | 1 | Engine coolant temperature | -40 | 215 | °C | A-40 |
| 1 | 6 | 1 | Short term fuel % trim—Bank 1 | -100 Subtracting Fuel (Rich Condition) | 99.22 Adding Fuel (Lean Condition) | % | (A-128) * 100/128 |
| 1 | 7 | 1 | Long term fuel % trim—Bank 1 | -100 Subtracting Fuel (Rich Condition) | 99.22 Adding Fuel (Lean Condition) | % | (A-128) * 100/128 |
| 1 | 8 | 1 | Short term fuel % trim—Bank 2 | -100 Subtracting Fuel (Rich Condition) | 99.22 Adding Fuel (Lean Condition) | % | (A-128) * 100/128 |
| 1 | 9 | 1 | Long term fuel % trim—Bank 2 | -100 Subtracting Fuel (Rich Condition) | 99.22 Adding Fuel (Lean Condition) | % | (A-128) * 100/128 |
| 1 | 0C | 2 | Engine RPM | 0 | 16,383.75 | rpm | ((A*256)+B)/4 |
| 1 | 0D | 1 | Vehicle speed | 0 | 255 | km/h | A |
| 1 | 0E | 1 | Timing advance | -64 | 63.5 | ° relative to #1 cylinder | A/2 – 64 |
| 1 | 0F | 1 | Intake air temperature | -40 | 215 | °C | A-40 |
| 1 | 10 | 2 | MAF air flow rate | 0 | 655.35 | grams/sec | ((A*256)+B) / 100 |
| 1 | 11 | 1 | Throttle position | 0 | 100 | % | A*100/255 |
| 1 | 12 | 1 | Commanded secondary air status | Bit encoded. See below. | |||
| 1 | 13 | 1 | Oxygen sensors present | [A0..A3] == Bank 1, Sensors 1-4. [A4..A7] == Bank 2… | |||
| 1 | 15 | 2 | Bank 1, Sensor 2: | Volts | A/200 | ||
| Oxygen sensor voltage, | 0 | 1.275 | % | (B-128) * 100/128 (if B==$FF, sensor is not used in trim calc) | |||
| Short term fuel trim | -100(lean) | 99.2(rich) | |||||
| 1 | 16 | 2 | Bank 1, Sensor 3: | Volts | A/200 | ||
| Oxygen sensor voltage, | 0 | 1.275 | % | (B-128) * 100/128 (if B==$FF, sensor is not used in trim calc) | |||
| Short term fuel trim | -100(lean) | 99.2(rich) | |||||
| 1 | 1C | 1 | OBD standards this vehicle conforms to | Bit encoded. See below. | |||
| 1 | 20 | 4 | PIDs supported [21 – 40] | Bit encoded [A7..D0] == [PID $21..PID $40] See below. | |||
| 1 | 22 | 2 | Fuel Rail Pressure (relative to manifold vacuum) | 0 | 5177.265 | kPa | ((A*256)+B) * 0.079 |
| 1 | 34 | 4 | O2S1_WR_lambda(1): | 0 | 1.999 | N/A | ((A*256)+B)/32,768 |
| Equivalence Ratio | -128 | 127.99 | mA | ((C*256)+D)/256 – 128 | |||
| Current | |||||||
| 1 | 38 | 4 | O2S5_WR_lambda(1): | 0 | 2 | N/A | ((A*256)+B)/32,768 |
| Equivalence Ratio | -128 | 128 | mA | ((C*256)+D)/256 – 128 | |||
| Current |