---
kind: "section"
citation: "40 C.F.R. § 85.1902"
title: "40"
number: "85.1902"
heading: "Definitions."
url: "https://uscodex.org/cfr/40/85.1902"
---

# §85.1902. Definitions.


For the purposes of this subpart and unless otherwise noted:

- (a) Act means the Clean Air Act, [42 U.S.C. 7401-7671q](/usc/42/7401-7671q.md), as amended.
- (b) **Emission-related defect—** means:
  - (1) A defect in design, materials, or workmanship in a device, system, or assembly described in the approved Application for Certification that affects any parameter or specification enumerated in appendix VIII of this part; or
  - (2) [Reserved]
- (c) **Useful life—** has the meaning given in section 202(d) of the Act (42 U.S.C.7521(d)) and regulations promulgated thereunder.
- (d) Voluntary emissions recall means a repair, adjustment, or modification program voluntarily initiated and conducted by a manufacturer to remedy any emission-related defect for which direct notification of vehicle or engine owners has been provided.
- (e) **Ultimate purchaser—** has the meaning given in section 216 of the Act (42 U.S.C.7550).
- (f) **Manufacturer—** has the meaning given in section 216 of the Act (42 U.S.C.7550).

## Notes

### Amendments

[81 FR 73973, Oct. 25, 2016, as amended at 86 FR 34364, June 29, 2021; 91 FR 7759, Feb. 18, 2026]

### Authority

Authority: Secs. 208(a) and 301(a), Clean Air Act, as amended (42 U.S.C. 1857f-6(a) and 1857g(a)).

### Source

Source: 42 FR 28128, June 2, 1977, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401-7671q.

### Amendments

[81 FR 73973, Oct. 25, 2016, as amended at 86 FR 34364, June 29, 2021; 91 FR 7759, Feb. 18, 2026]