Short term fuel trim — Bank 2
Last reviewed 2026-08-31
Mode 01 · PID 08 (decimal 8)
Description
Short-term fuel trim bank 2 (V-engines / second bank). Positive = adding fuel; negative = removing fuel.
- PID number
- 08 · 8
- Unit
- %
- Range
- -100 … 99.2
- Data bytes
- 1
- Formula
- (A*100/128)-100
- 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 08