Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Mode $01 (Current Powertrain Diagnostic Data)
Refer to data denoting the current operating condition of analog input/output, digital input/output or the powertrain system.
A list of the support data and PID (Parameter Identification) codes are shown in the following table.
| PID | Data | Unit |
|---|---|---|
| $01 | Number of emission-related powertrain DTC, and malfunction indicator light status and diagnosis support information | - |
| $03 | Fuel system control status | - |
| $04 | Calculated engine load value | % |
| $06 | Short term fuel trim | % |
| $07 | Long term fuel trim | % |
| $0B | Intake manifold absolute pressure | kPa |
| $0C | Engine speed | rpm |
| $0D | Vehicle speed | km/h |
| $0E | Ignition timing advance | ° |
| $0F | Intake air temperature | Celsius |
| $10 | Intake air amount | g/s |
| $11 | Throttle valve opening angle | % |
| $13 | Air fuel ratio sensor | - |
| $15 | Oxygen sensor output voltage and short term fuel trim associated with oxygen sensor (bank 1 sensor 2) | V and % |
| $1C | Supporting OBD system | - |
| $1F | Elapsed time after starting the engine | sec |
| $21 | Travel distance after the malfunction indicator light illuminates | km |
| $24 | A/F value and A/F sensor output voltage (bank 1 sensor 1) | - and V |
| $2C | Target EGR | % |
| $2D | EGR deviation | % |
| $2E | Evaporative purge | % |
| $2F | Fuel level | % |
| $30 | Number of warm ups after DTC clear | Time |
| $31 | Travel distance after DTC clear | km |
| $33 | Barometric pressure | kPa |
| $34 | A/F value and A/F sensor current (bank 1 sensor 1) | - and mA |
| $3C | Catalyst temperature #1 | Celsius |
| $41 | Diagnostic monitor of each drive cycle | - |
| $42 | ECM power voltage | V |
| $43 | Absolute load | % |
| $44 | A/F target lambda | - |
| $45 | Relative throttle opening angle | % |
| $46 | Ambient temperature | Celsius |
| $47 | Absolute throttle opening angle 2 | % |
| $49 | Absolute accelerator opening angle 1 | % |
| $4A | Absolute accelerator opening angle 2 | % |
| $4C | Target throttle opening angle | % |
| $4D | Engine operating time while malfunction indicator lit | min |
| $4E | Elapsed time after DTC clear | min |
| $51 | Fuel used | - |
| $53 | ELCM pressure | kPa |
| $5A | Relative accelerator opening angle | % |
| $5C | Engine oil temperature | Celsius |
| $62 | Actual engine illustrated torque | % |
| $63 | Engine reference torque | Nm |
| $65 | Neutral status | - |
| $67 | Engine inlet/outlet coolant temperature | Celsius |
| $6D | Fuel pressure and target fuel pressure | kPa |
| $8E | Engine friction torque | % |
| $9D | Engine fuel consumption and vehicle fuel consumption | g/s |
| $9E | Engine exhaust flow | kg/h |
| $A6 | Vehicle Odometer | km |
Refer to general scan tool manufacturer's operation manual to access current powertrain diagnostic data (MODE $01).
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.