The exhaust and the equipment that cleans it: catalytic converters, particulate filters, exhaust gas recirculation, the software that governs them.
Most emissions notices are compliance rather than safety - the vehicle is not dangerous, it simply does not meet the standard it was certified against. The repair is free either way, and refusing it can matter later at a roadworthiness test.
How often it appears
The Canadian register carries 175 notices filed under Emissions, between 1975 and 2009. The phrase is Transport Canada's own; the explanation above is this site's.
The most recent of them
- 2009326 FREIGHTLINER · Truck - Med. & H.D. · 16 November 2009
- 2009289 PIERCE · Truck - Med. & H.D. · 6 October 2009
- 2009256 KENWORTH · Truck - Med. & H.D. · 8 September 2009
- 2009064 APRILIA · Motorcycle · 2 March 2009
- 2009059 STERLING · Truck - Med. & H.D. · 27 February 2009
- 2009060 STERLING · Truck - Med. & H.D. · 27 February 2009
- 2009024 FLEETWOOD · Motorhome · 27 January 2009
- 2009013 PETERBILT · Truck - Med. & H.D. · 16 January 2009
- 2008013 VOLVO · Truck - Med. & H.D. · 17 January 2008
- 2007409 FREIGHTLINER · Truck - Med. & H.D. · 14 December 2007
- 2007290 ORION · Bus · 6 September 2007
- 2000096 FORD · Car · 14 April 2000
- 2000043 DODGE · Light Truck & Van · 25 February 2000
- 2000029 MAZDA · Light Truck & Van · 17 February 2000
- 1999240 OLDSMOBILE · Car · 23 December 1999
- 1999235 CADILLAC · Car · 22 December 1999
- 1999220 MAZDA · Car · 30 November 1999
- 1999225 BUICK · Car · 30 November 1999
- 1999200 DODGE · Light Truck & Van · 29 October 1999
- 1999203 ISUZU · SUV · 29 October 1999
- 1999162 FORD · Car · 15 September 1999
- 1999153 FORD · Car · 19 August 1999
- 1999134 FORD · Car · 26 July 1999
- 1999128 PONTIAC · Car · 28 June 1999
- 1999092 DODGE · Light Truck & Van · 18 May 1999
- 1999081 CHEVROLET · Car · 12 May 1999
- 1999079 GMC · Light Truck & Van · 6 May 1999
- 1999045 PLYMOUTH · Car · 18 March 1999
- 1999033 DODGE · Light Truck & Van · 3 March 1999
- 1999036 PLYMOUTH · Car · 3 March 1999
- 1999009 DODGE · Car · 18 January 1999
- 1999007 VOLVO · Car · 14 January 1999
- 1998236 FORD · Light Truck & Van · 27 November 1998
- 1998234 FORD · Car · 23 November 1998
- 1998226 JEEP · SUV · 20 November 1998
- 1998227 PLYMOUTH · Car · 20 November 1998
- 1998215 JEEP · Minivan · 9 November 1998
- 1998216 CHRYSLER · Car · 9 November 1998
- 1998179 BUICK · Car · 14 September 1998
- 1998170 CHEVROLET · Car · 26 August 1998