MODE 01 · PID 0F

Intake air temperature

Intake-air temperature is measured at the sensor location. Heat soak can make it differ from ambient air, especially after a warm stop.

Formula
A − 40
Data bytes
1
Units
°C

A worked decoding example

Request: 01 0F

Response: 41 0F 41

Data: 41 → 25 °C

The example shows service, PID and data only. It omits adapter headers, CAN identifier, length and padding. It is not a live vehicle reading.

Reading context

Record whether the engine is cold, recently stopped or under load. Compare trends rather than assuming a fixed difference from outside temperature.

A decoded value is a measurement, not a diagnosis. Encoding limits are not normal operating limits. Confirm vehicle support and the manufacturer’s procedure.

Byte decoder

Your input stays in this browser.MODE 01

FormulaA − 40 → °C

A decoded value is a measurement, not a diagnosis. Encoding limits are not normal operating limits. Confirm vehicle support and the manufacturer’s procedure.

Sources

  1. python-OBD: Mode 01 command table ↗
  2. python-OBD: byte decoding implementation ↗
  3. CSS Electronics: OBD-II PID and response frames ↗
  4. California BAR: OBD test reference ↗

Independent reference; no affiliation with SAE, vehicle manufacturers or regulators. Sources checked 28 October 2026.