WWH-OBD vehicle OBD system information
Last reviewed 2026-08-31
Mode 01 · PID 90 (decimal 144)
Description
World-Wide Harmonized OBD system information (hours). Relevant to later EU type approvals.
- PID number
- 90 · 144
- Unit
- h
- Range
- —
- Data bytes
- 3
- Formula
- WWH-OBD system information
- 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 90