Emission Control Systems: Application and ID

VEHICLE EMISSION CONTROL INFORMATION (VECI)

VECI Decal

Typical VECI Decal:

Each vehicle has a VECI decal containing emission control information that applies specifically to the vehicle and engine. The specifications on the decal are critical to repairing the emissions systems.

VECI Decal Location
Typical location of the decal is on the underside of the hood or on the radiator support sight shield.

Engine/Evaporative Emission (EVAP) System Information

Typical VECI Decal Used As An Example:

Engine Family Group Work Sheet:

Evaporative Family Name Work Sheet:

Manufacturers must use a standardized system for identifying their individual engine families. The system described was developed by the Environmental Protection Agency (EPA) in 1991 to meet new regulatory requirements for 1994 and later model years.

The engine family group and evaporative family name consists of 12 characters each.

Both the engine family group and the evaporative family name are listed in the box on the emission decal as indicated in the area marked as engine evaporative family information. The first line contains engine size and the 12-character engine family group. The second line contains the 12-character evaporative family name information. Both the engine family group and the evaporative family name are specific to the vehicle. Please refer to the Engine Family Group and the Evaporative Family Name worksheet for decoding information.

Base Engine Calibration Information

Typical Car Vehicle Certification Label:

Typical Truck Vehicle Certification Label:

Base engine calibration information, also sometimes referred to as the powertrain calibration, is located in the lower right corner of the vehicle certification label. Engine calibration information is limited to a maximum of 5 characters per line (2 lines maximum). Calibration information more than 5 characters long wrap to the second line of this field. Only the base calibration appears on this label. The revision level is no longer printed on the label, however, it can be found in the On-Line Automotive Service Information System (OASIS). For more information on the vehicle certification label or engine calibration, refer to Vehicle/Application and ID, Identification Codes.

Vehicle Certification Label Location
Typical location of the vehicle certification label is on the LH door or door post pillar.

Engine Calibration Code