Engine exhaust flow rate
Last reviewed 2026-08-31
Mode 01 · PID 9E (decimal 158)
Description
Engine exhaust mass-flow rate.
- PID number
- 9E · 158
- Unit
- kg/h
- Range
- —
- Data bytes
- 2
- Formula
- Exhaust mass flow
- 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 9E