Tweet

Feb 24, 2009 2:21 PM

A final rule has been issued that will require heavy-duty engine emission control systems be monitored for malfunctions via an onboard diagnostic system (OBD) similar to those that have been required on passenger cars since the mid-1990s.

The Environmental Protection Agency rule (published February 24 in the Federal Register) applies to 2010 and later heavy-duty engines used in highway applications over 14,000 pounds and revises onboard diagnostic requirements for diesel highway heavy-duty vehicles under 14,000 pounds.

The rule (40 CFR Part 86, 89, 90, 1027, 1033, 1042, 1048, 1054, 1060, 1065, and 1068) will require manufacturers to install OBD systems that monitor the functioning of emission control components and alert the vehicle operator to any detected need for emission related repair.

In addition, manufacturers will be required to make information available to the service and repair industry that is necessary to perform repair and maintenance service on OBD systems and other emission-related engine components.

The rule becomes effective April 27, 2009.