Vehicle Emission Control Information

Typical Vehicle Emission Control Information Label:

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

In addition to the tune-up specifications and procedures, the emission decal shows a color-coded schematic of the engine vacuum system. The color coding on the schematic represents the actual color coding on the vacuum hoses. However, there will be instances when a hose color does not match the color on the decal.

Typical location of the decal will be on the underside of the hood or the radiator support sight shield.

Typical Calibration Code Label:

An Emission Calibration label is attached to all vehicles. This label is attached to the LH side door or door post pillar. It identifies the engine year, calibration design, and design revision level. These numbers are used to identify service parts and engine specifications that make up the emission system designed for the vehicle.





Use the following to interpret the calibration code from the Emission Calibration Label:
1. MODEL YEAR
This number represents the model year in which the Calibration was first introduced. The model year 1998.
2. CALIBRATION DESIGN LEVEL
Represents the design level assigned to the engine (14A).
3. CALIBRATION REVISION LEVEL
Represents the revision level of the calibration (ROO). These numbers will advance as revisions occur.