Unique Calibration
The Emission/CAFE/CO2 Compliance Department is responsible for assigning these calibration numbers. Unique calibration identifications are assigned to cover similar vehicles to differentiate between tires, drive configurations, final drive ratios and other certification-significant factors.
These two characters are chosen by the analyst to provide easily identifiable information unique to each calibration (for example, using the number 2 to denote a two-valve engine versus the number 4 to denote a four-valve engine).
Fleet Code
- 0 - Certification (U.S. 4K, final sale in an export market)
- 1 - HDGE/Dyno
- 2 - Fast AMA U.S.
- 3 - ADP U.S.
- 4 - Not assigned
- 5 - Not assigned
- 6 - Evaporative emissions
- 7 - MACAA
- 8 - On-board diagnostics
- 9 - Not assigned
Certification Region
- 5 - U.S. fifty states
- A - U.S. federal, including altitude, may include Canada, may include Mexico
- B - U.S. California standard, includes U.S. green states
- C - Canada
- D - China
- G - Gulf Cooperative Council (Bahrain, Kuwait, Oman, Qatar, Saudi Arabia and UAE)
- H - Hong Kong
- J - Japan
- K - Korea
- L - Malaysia
- M - Mexico
- N - New Zealand
- P - Australia
- Q - South America (Brazil)
- S - Singapore
- T - Taiwan
- U - South America (unleaded fuel regions)
- V - Vietnam
- X - Rest of world (ROW)
- Y - Military
- Z - Israel
Revision Level (not printed on label)
- 91-99 - Hardware and certification levels
- 01-04 - Preliminary levels
- 00 - Job 1 production (initial certification)
- 05-09 - Pre-job 1 revisions to calibrations
- 10-89 - Post-job 1 revisions to calibrations
- 0B - Durability test level
- BD - On-board diagnostics (OBD) intermediate level (pre-05)