Does the 2021 CRV have a particulate filter?
3 Answers
The 2021 CRV is equipped with a particulate filter, meeting the China VI emission standards. The particulate filter is a ceramic filter installed in the diesel engine's emission system, capable of capturing particulate emissions before they enter the atmosphere. It can reduce the soot produced by diesel engines by more than 90%, and the captured particulate emissions are subsequently burned off during vehicle operation. Diesel engine pollution mainly comes from three aspects—particulate emissions, hydrocarbons (HCx), nitrogen oxides (NOx), and sulfur. Among them, particulate emissions (soot) are mostly composed of tiny particles of carbon or carbide (size less than 4-20μm). Working principle of the particulate filter: The diesel particulate filter is coated with metals like platinum, rhodium, and palladium. The black smoke containing carbon particles emitted by the diesel engine enters the exhaust particulate filter through a dedicated pipeline. After passing through its densely arranged bag-type filter, the carbon smoke particles are adsorbed on a filter made of metal fiber felt. When the adsorption of particles reaches a certain level, the burner at the end automatically ignites, burning off the carbon particles adsorbed on it and converting them into harmless carbon dioxide. To check whether the 2021 CRV has a particulate filter, you can use the following three methods: Check the and to see if there is a particulate filter function. Additionally, you can carefully check the fault codes in the manual to see if there is a "particulate filter" warning light. Check the label above the oil filler cap. If the oil cap clearly indicates 0W-20 grade oil, it means the vehicle is equipped with a particulate filter. Check whether there is a cylindrical section on the exhaust pipe behind the three-way catalytic converter. If there is, that is the particulate filter.
I've been driving for over a decade and just switched to a 2021 CR-V Hybrid last year, so I've specifically researched this issue. All models of this vehicle come equipped with a particulate filter, whether you choose the 1.5T gasoline version or the hybrid version—it's installed at the factory. Honda added this primarily to meet the China 6B emission standards, and it's located at the front end of the exhaust pipe. Once during a long trip, a warning suddenly popped up on the dashboard, and I realized it was the particulate filter performing a self-cleaning. I recommend driving more on highways during the break-in period for new cars and avoiding prolonged city traffic jams, as the particulate filter can easily get clogged otherwise. My car has 20,000 kilometers on it, and I take a highway trip every month—never had any issues. Also, remember to use genuine engine oil, as it affects the lifespan of the emission system.
Last year, I bought my dad a 2021 CR-V gasoline version, and I specifically checked the configuration sheet. All Honda China models have been equipped with particulate filters since 2020, and the CR-V is no exception. It's located at the front section of the exhaust pipe, designed to capture carbon particles in the exhaust. After driving 30,000 kilometers, I've noticed two points to pay attention to: first, avoid short trips with a cold engine, as starting and shutting down immediately is most damaging to the device; second, don't panic if the dashboard shows a yellow light, it's most likely reminding you to rev the engine at high speed. By the way, the hybrid version, due to frequent engine start-stop, is actually less prone to clogging. If it does get clogged, don't take it to a small repair shop for disassembly—the dealership has a dedicated regeneration program.
