ECU name message count
Last reviewed 2026-08-31
Mode 09 · PID 09 (decimal 9)
Description
How many messages are needed to report the ECU name.
- PID number
- 09 · 9
- Unit
- count
- Range
- —
- Data bytes
- 1
- Formula
- Message count for PID 0A
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: 09 09