Current through Register Vol. 63, No. 12, December 1, 2024
This rule documents the general requirements and test sequence
for the light or heavy-duty vehicle OBD test method.
(1) General Requirements:
(a) DEQ must reject from the testing area
vehicles having coolant, oil or fuel leaks or any other such defect that make
conducting the emission test unsafe. The inspector may not conduct the
emissions test until the defects are corrected.
(b) Light duty gasoline vehicles must be 1996
and newer model years.
(c) Light
duty diesel vehicles must be 1997 and newer model years.
(d) Heavy duty gasoline vehicles must be 2013
and newer model years and equipped with an OBD-II compliant or newer OBD
system.
(e) The vehicle must have a
properly affixed and readable VIN.
(f) The vehicle's OBD system must match the
original manufacturer's information and must communicate with DEQ's OBD
analytical equipment.
(A) All 2005 and
subsequent model year light duty vehicles must have the VIN included in the
vehicle OBD information.
(B) All
2013 and subsequent model year heavy-duty vehicles must have the VIN included
in the vehicle OBD information.
(g) If an Original Equipment Manufacturer LPG
powered vehicle, model year 1996 through 2004, has a DEQ-recognized OBD
manufacture defect, DEQ will follow the idle emission testing criteria of OAR
340-256-0340, OAR
340-256-0380, OAR
340-256-0390, OAR
340-256-0400 and OAR
340-256-0420.
(2) Test criteria:
(a) Gasoline powered motor vehicles from
model years 1996 to 2000 are allowed two unready monitors; 2001 and newer
vehicles are allowed one unready monitor.
(b) Diesel powered motor vehicles from 1997
to 2008 are not allowed any unready monitors; 2009 and newer model year diesel
powered motor vehicles are allowed one unready monitor.
(c) A vehicle which previously failed with
either a catalyst or evaporative Diagnostic Trouble Code must have their
respective monitor in a ready status to pass a subsequent retest. The vehicle
will be allowed one or two unready monitors depending on the model year, but an
unready catalyst or evaporative monitor cannot be one of them.
(d) Vehicle OBD systems deviating from
manufacturer's design or intended operation will fail for:
(A) Malfunctions of the OBD systems
triggering the Malfunction Indicator Light commanded on.
(B) A missing, broken or inaccessible Data
Link Connector port.
(C) Low or
missing vehicle battery voltage from the Data Link Connector port.
(D) Vehicle OBD data that does not match
original manufacturer's OBD data.
(E) The OBD system VIN does not match the
vehicle VIN labeling unless recognized by DEQ as a known unresolvable
manufacture defect.
(F) The OBD
system fails to properly communicate.
(e) When light duty 1996 - 1998 vehicles that
DEQ knows have manufacture readiness issues have three or more unready monitors
and do not fail OBD systems criteria in section (2)(d)(A-F), DEQ will test
those vehicles with a basic test following OAR
340-256-0340.
(3) The Director or the Director's
delegate may grant a waiver from one or more of the requirements or criteria
listed in sections (1) and (2) for vehicle classes that DEQ determines present
prohibitive inspection problems meeting the requirements or criteria of
sections (1) and (2) if DEQ deems the motor vehicle pollution control system
otherwise meets the standards of this Division.
[NOTE: This rule is included in the State of Oregon Clean Air
Act Implementation Plan that EQC adopted under OAR
340-200-0040.]
Statutory/Other Authority: ORS
468A.380
Statutes/Other Implemented: ORS
468A.365
