Testing in BC occurs every 2 years for cars with OBD connections otherwise anual testing is required. The test looks for NOx, Carbon Monoxide and Particulate levels based on a standard derived from California.
They don't check gas caps any more and don't pop the hood to see if there are any mods that could have an affect on the emissions.
They will look under the vehicle to see if the cat is visible.
The test looks at idle emissions and driving emissions by means of a loaded set of rollers that simulate 40 KPH (25 MPH). They shove a probe up the tail pipe to measure this.
Here are the results of my car's previous tests, all prior to me owning it (sorry about the formatting which dropped when I posted this):
AirCare inspection results for registration
MY NB TDI are shown below. According to the inspection records, this vehicle is a 1999 model year vehicle with a curb weight of 1276 kilograms and an engine displacement of 1.9 litres. Based on the results obtained, this vehicle is not currently eligible for re-licensing.
Inspection DateTime / Odometer Reading / Inspection Expiry Date / Driving HC / Driving CO / Driving NOx / Idle HC / Idle CO / OBD / Visual Insp. / Overall Result
2006-01-11 09:28:32 130,000 2008-01-07 N/A N/A N/A N/A N/A P N/A P
2004-01-05 14:10:20 92,000 2005-12-31 N/A N/A N/A N/A N/A P N/A P
2001-01-23 11:35:11 39,000 2003-01-19 N/A N/A N/A N/A N/A P N/A P
Notes:
- <LI class=tablenote>The Odometer Readings are given to AirCare inspectors by the motorist and cannot be guaranteed for accuracy. <LI class=tablenote>The Inspection Expiry Date indicates the last date that the vehicle is eligible for re-licensing in the program area. After that date, the vehicle must pass another inspection prior to re-licensing. <LI class=tablenote>Driving emission measurements are made with the vehicle operating on a dynamometer to simulate normal driving conditions. <LI class=tablenote>Emission Readings: HC = hydrocarbons, CO = carbon monoxide, NOx = oxides of nitrogen. Depending on the test type, tailpipe emission measurements may be in percent (%), parts per million (ppm), or grams per kilometre (gm/km). <LI class=tablenote>Red text is used to highlight failing results based on the standards in effect at the time of the test. More info on standards. <LI class=tablenote>Besides tailpipe emission measurements, a vehicle may also fail a visual inspection for tampered emission control components, gas cap, or on-board computer fault codes, if applicable. In any of those cases, the last column on the right-hand side will have a red "F" indicating the overall result is fail.
- The Overall Result can be either P (pass), F (fail), C (cost waiver), or Q (qualified waiver). Both C and Q results are conditional passes which mean the necessary emission repairs are not yet complete. More info on conditional passes.
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