OAR 340-256-0400
Emission Control System Inspection: Light Duty Motor Vehicle Emission Control Standards for Basic Program


This rule documents the standards not to be exceeded for light duty motor vehicles that undergo the Basic emission test.

(1)

Light Duty Diesel Motor Vehicle Emission Control Standards: 1.5% CO; there is no HC standard.

(2)

Light Duty Gasoline Motor Vehicle Emission Control Standards: Four-Stroke Cycle — Passenger Cars:

(a)

1975–1980 Model Year:

(A)

With Catalyst: 1.0% CO and 220 ppm HC;

(B)

Without Catalyst: 2.5% CO and 300 ppm HC.

(b)

1981 and Newer Model Year: at idle — 1.0% CO and 220 ppm HC;

(3)

Light Duty Gasoline Motor Vehicle Emission Control Standards — Light Duty Trucks:

(a)

6,000 GVWR or less:

(A)

1975–1980 Model Year:
(i)
With Catalyst: 1.0% CO and 220 ppm HC;
(ii)
Without Catalyst: 2.5% CO and 300 ppm HC.

(B)

1981 and Newer Model Year: at idle — 1.0% CO and 220 ppm HC;

(b)

6,001 to 8,500 GVWR:

(A)

1975–1978 Model Year: 2.5% CO and 300 ppm HC;

(B)

1979–1980 Model Year:
(i)
With Catalyst: 1.0% CO and 220 ppm HC;
(ii)
Without Catalyst: 2.5% CO and 300 ppm HC.

(C)

1981 and Newer: at idle — 1.0% CO and 220 ppm HC;

(4)

Gross CO emissions exceed the applicable model year CO standard by a factor of one and one-half (1.5).

(5)

Gross HC emissions exceed the applicable model year HC standard by a factor of three (3).

(6)

Visible emissions must not occur during the steady-state unloaded and raised rpm engine idle portions of a gasoline engine emission test from either the vehicle’s exhaust system or the engine crankcase. For a diesel engine emissions test, visible emissions must not exceed 20% opacity.

(7)

The Director or Director’s delegate may grant a waiver from standards listed in sections (1)–(6) for vehicle classes that DEQ determines present prohibitive inspection problems meeting the standards in sections (1) – (6) if DEQ deems the motor vehicle pollution 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 (State of Oregon Clean Air Act Implementation Plan).]

Source: Rule 340-256-0400 — Emission Control System Inspection: Light Duty Motor Vehicle Emission Control Standards for Basic Program, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=340-256-0400.

340‑256‑0010
Definitions
340‑256‑0100
Visible Emissions: General Requirements, Exclusions
340‑256‑0110
Visible Emissions: Special Requirements for Excluded Motor Vehicles
340‑256‑0130
Visible Emissions: Motor Vehicle Fleet Operation
340‑256‑0140
Visible Emissions: Dealer Compliance
340‑256‑0150
Visible Emissions: Opacity Method of Measurement
340‑256‑0160
Visible Emissions: Alternative Methods of Measuring Visible Emissions
340‑256‑0200
Certification of Pollution Control Systems: County Designations
340‑256‑0210
Certification of Pollution Control Systems: Criteria for Certification of Motor Vehicle Pollution Control Systems
340‑256‑0220
Compliance With Oregon Low Emission Vehicle Program
340‑256‑0300
Emission Control System Inspection: Scope
340‑256‑0310
Emission Control System Inspection: Government-Owned Vehicle, Permanent Fleet Vehicle and United States Government Vehicle Testing Requirements
340‑256‑0320
Emission Control System Inspection: Motor Vehicle Inspection Program Fee Schedule
340‑256‑0330
Emission Control System Inspection: Department of Defense Personnel Participating in the Privately Owned Vehicle Import Control Program
340‑256‑0340
Emission Control System Inspection: Light Duty Motor Vehicle and Heavy Duty Gasoline Motor Vehicle Emission Control Test Method for Basic Program
340‑256‑0355
Emission Control System Inspection: Emissions Control Test Method for OBD Test Program
340‑256‑0356
Emission Control System Inspection: Emissions Control Test Method for On-Site Vehicle Testing for Automobile Dealerships
340‑256‑0357
Emission Control System Inspection: Emissions Control Test Method for Clean-Screening Program
340‑256‑0358
Emission Control System Inspection: Emissions Control Test Method for Self-Service Testing Program
340‑256‑0370
Emission Control System Inspection: Renewal of Registration for Light Duty Motor Vehicles and Heavy Duty Gasoline Motor Vehicles Temporarily Operating Outside of Oregon
340‑256‑0380
Emission Control System Inspection: Light Duty Motor Vehicle Emission Control Test Criteria for Basic Program
340‑256‑0390
Emission Control System Inspection: Heavy Duty Gasoline Motor Vehicle Emission Control Test Criteria
340‑256‑0400
Emission Control System Inspection: Light Duty Motor Vehicle Emission Control Standards for Basic Program
340‑256‑0420
Emission Control System Inspection: Heavy-Duty Gasoline Motor Vehicle Emission Control Standards
340‑256‑0440
Emission Control System Inspection: Criteria for Qualifications of Persons Eligible to Inspect Motor Vehicles and Motor Vehicle Pollution Control Systems and Execute Certificates
340‑256‑0450
Emission Control System Inspection: Gas Analytical System Licensing Criteria for Basic Program
340‑256‑0465
Emission Control System Inspection: Test Equipment Licensing Criteria for OBD Test Program
340‑256‑0470
Emission Control System Inspection: Agreement With Independent Contractor
Last Updated

Jun. 8, 2021

Rule 340-256-0400’s source at or​.us