2. This Part of this Schedule also applies to a vehicle if, when the engine is running without load at a fast idling speed—
(a)the carbon monoxide content of the exhaust emissions from the engine exceeds 0.3% of the total exhaust emissions from the engine by volume;
(b)the hydrocarbon content of those emissions exceeds 0.02% of the total exhaust emissions from the engine by volume; or
(c)the lambda value is not within the relevant limits.