Intake air temperature sensor
Last reviewed 2026-08-31
Mode 01 · PID 68 (decimal 104)
Description
Dual IAT sensors. Same layout as PID 67.
- PID number
- 68 · 104
- Unit
- °C
- Range
- -40 … 215
- Data bytes
- 3
- Formula
- B-40 ; C-40 (A = support bits)
- Also valid as Mode 02 freeze-frame data (same PID number, snapshot at last DTC).
Defined by SAE J1979 / ISO 15031-5. Public index — not a substitute for the paid SAE document.
Sources
Provenance for this page. Official standards outrank community notes. See the confidence policy.
Official standard · high trust
SAE J1979 / ISO 15031-5 Mode 01 PID formulas (public index)
J1979 public PID index: 01 68