Article 19 Prohibition of defeat devices

The use of defeat devices that reduce the effectiveness of safety, electromagnetic compatibility, the on-board diagnostics system, sound abatement or pollutant emission abatement systems shall be prohibited. An element of design shall not be considered a defeat device if any of the following conditions is met:

1. (a)

   the need for the device is justified in terms of protecting the engine against damage or accident and ensuring safe operation of the vehicle;

2. (b)

   the device does not function beyond the requirements of engine starting;

3. (c)

   the operating conditions are included to a substantial extent in the test procedures for verifying if the vehicle complies with this Regulation and with the delegated and implementing acts adopted pursuant to this Regulation.