Citation:

Analysis of Evaporative On-Board Diagnostic (OBD) Readiness and DTCs Using I/M Data.

Impact/Purpose:

This report analyzes onboard diagnostics (OBD), for specifically evaporative emissions related diagnostic trouble codes (DTCs) data from a diverse selection of States.

Description:

Gasoline vehicles are equipped with evaporative emissions control systems that control vapor from the fuel storage system while a vehicle is sitting or driving. When these systems or the vehicle’s gasoline delivery system malfunction, excessive evaporative emissions can be emitted. Few estimates of the frequency of vehicles with evaporative emissions malfunctions, or leaks, in the fleet exist. These vehicles can have a significant impact on the hydrocarbon (HC) emissions inventory.

URLs/Downloads:

Analysis of Evaporative On-Board Diagnostic Readiness and DTCs Using I/M Data - Charge Letter  (PDF, NA pp,  4659  KB,  about PDF)

Analysis of Evaporative On-Board Diagnostic Readiness and DTCs Using I/M Data - Final Report  (PDF, NA pp,  2123  KB,  about PDF)

Analysis of Evaporative On-Board Diagnostic Readiness and DTCs Using I/M Data - EPA Response to Peer Review Comments  (PDF, NA pp,  5607  KB,  about PDF)

Analysis of Evaporative On-Board Diagnostic Readiness and DTCs Using I/M Data - Peer Review Report  (PDF, NA pp,  4659  KB,  about PDF)

Record Details:

Record Type:DOCUMENT( ASSESSMENT DOCUMENT)

Product Published Date:02/19/2014

Record Last Revised:03/07/2014

OMB Category:Other

Record ID: 260860