Here's How To Find and Solve Your Honda Emission System Problems

November 16, 2022

What are the main takeaways related to the honda emission system problems?

The main takeaway from this problem is that the Honda engine has an emissions control system that helps reduce harmful gases produced by vehicles.

The system consists of three parts: A catalytic converter, which reduces carbon monoxide (CO) and hydrocarbons (HC), a particulate filter (PF) for removing fine particles such as soot, and a selective catalyst reduction (SCR) device for reducing nitrogen oxides (NOx).

catalytic converter

Each component contributes to improving vehicle performance and fuel economy. However, these components have been found to produce unwanted side effects. For example, the PF may cause increased back pressure on the engine, while the SCR may increase NOx emissions.

What are some of the common causes of emission system problems on Honda vehicles?

The reason for this problem is due to a design flaw. This flaw causes the vehicle's engine control unit to think there are two different types of fuel injectors on board which results in the wrong type of fuel being injected into the combustion chamber, leading to higher emissions levels.

This error was found by Honda engineers during testing at an emission laboratory, where they were surprised to find that the car had been emitting high levels of carbon monoxide and hydrocarbons.The solution to this problem is simple; redesign the system so that it reads the correct number of injectors.

Honda has been working hard to improve the fuel efficiency of its vehicles. The company has introduced several technologies to help reduce emissions from its vehicles. One such technology is called EGR (Exhaust Gas Recirculation). This technology helps reduce harmful gases emitted by the vehicle while also increasing engine performance.

Honda has released two sets of repair bulletins, both of which cover the 2017 and 2018 models. They've also released a set of repair bulletins for the 2016 model.

Emission System Problems by Honda Model

Honda Odyssey

The most common cause of engine misfires on Honda Odyssey vehicles is an issue with the ignition coils. The ignition coil is responsible for turning the spark plugs on and off as well as providing power to the fuel injectors. If the ignition coil fails or has been damaged, then you will experience misfiring and other problems such as stalling out, rough idle, lack of acceleration, etc.

Honda Pilot

Honda Pilot owners report transmission judder and emission light issues.

Affected vehicles include the 2016-2018 Honda Pilots.

honda pilot

The recall covers approximately 1.2 million units in the U.S., including about 565,000 in Canada. The affected models are equipped with a 2.4L engine that uses an electronic throttle control (ETC) system to regulate fuel flow to the engine.

The emission control system on a Honda Pilot uses an oxygen sensor that measures the amount of oxygen in the exhaust gas stream. Because the engine runs leaner at low speeds, there is less oxygen available to react with nitrogen oxides (NOx) to form NO2 and N2O4. This results in higher levels of these gases in the exhaust. These gases are known as unburnt hydrocarbons (HC).

The solution is to add a rich mixture of fuel and air to the engine during idle conditions. This allows the engine to burn more fuel which produces additional heat to reduce HC levels. However, this also increases the temperature of the exhaust gases which causes them to oxidize into carbon dioxide and water vapor.

While this is not harmful to the environment, it reduces the efficiency of the vehicle. To avoid this, there is a catalyst in the exhaust system that converts the CO2 back into harmless H20 and CO. To do this, we use a chemical reaction called the SCR (Selective Catalytic Reduction), where urea is injected directly into the exhaust stream. Urea breaks down into ammonia and hydrogen cyanide when heated by exhaust gases.

In turn, the ammonia reacts with the NOx to produce nitrogen and water vapor.
We recommend adding 1 lb/gal of urea per year to maintain optimum performance. A single injection should last between 3-5 minutes. If you exceed the recommended dosage, you may experience increased oil consumption and possible damage to other components.

Check out some of the other issues drivers report here on reddit.

Honda CRV

Honda CR-V is a compact SUV manufactured by Honda. It was introduced in the year 2000 and has been produced since then. The car is available with two engine options, one of which is 1.8L i-VTEC petrol engine that produces 140bhp at 5500rpm and 206Nm of torque at 4000rpm. The other option is 2.0L 

Many Honda CRV's have had the same issue related to emissions systems. When the engine startups up and the headlights are turned on, there are two distinct sounds that may come from the exhaust pipe. One sound is like a whooshing noise, and the other is more of a hissing type of sound. 

honda crv

The emissions system on a Honda CR-V works by using an engine control unit (ECU) which controls all aspects of the vehicle’s engine operation. This ECU communicates with sensors located around the car to monitor various parameters such as engine temperature, fuel consumption, oil pressure etc.

The ECU uses this information to determine whether the car is operating within its normal limits, and if any problems are detected, then it issues an alert message to the driver via a warning light on the dashboard. If the problem persists, then the ECU will shut down the engine completely until repairs have been made.

If you were designing a solution to the emissions problem, what would you do? How could you make sure that the ECU was able to detect when there was a problem with the emissions system? What might you need to add to the system to ensure that this could happen?

Honda Passport

The most important thing you need to know if you want to fix this problem is that there are 2 types of emission systems on cars. A diesel engine and an electric motor. Now when we talk about fixing the car, we're talking about replacing the electric motor with a petrol engine which would mean that the vehicle would have to be converted from an Electric Vehicle (EV) into a Hybrid Vehicle (HV).

This would require a huge amount of resources and money. It would also make the car heavier and less efficient. So instead of converting the whole car, you could just convert the battery pack, which is what powers the electric motor. This would not change the weight of the car, but it would allow us to keep all of the original parts of the car, such as the doors, seats, steering wheel, etc. If you did this, then the vehicle would still be an EV and therefore, it wouldn't emit any CO2 at all. However, it would have a much lower range because of the extra weight.

Honda Accord

The emissions system on the Accord is not designed well enough to handle today’s pollution levels. This leads to poor air quality. It also causes unnecessary engine wear and reduces fuel efficiency.

To solve this problem, we need to make changes to the design of the emissions system. We must redesign it from scratch.

We have to completely rethink the way it works. And we have to do it quickly because there are already over 30 million cars on the road.

This is an opportunity to create a better product. A product that our customers will love and use.

A product that they will talk about for years after they buy it.

Honda Civic

The emissions system on a Honda Civic is very complex. It is made up of many different parts. Each part must work together to make sure the car doesn't emit any harmful gases into the air.

This includes all of the engine components, such as the exhaust pipe, catalytic converter, muffler, and fuel injectors. If you were to break these individual parts apart, they would not function properly. You could have an emission-free vehicle but if one component were broken, there would still be problems.

The first step in fixing this issue is to understand what each part does. Once you know what each part does then, you can start working on replacing them. By replacing the exhaust pipe, you are removing the pollution from the exhaust gas and converting it to water vapor. This makes the environment cleaner by keeping the air fresh and clean.

Replacing the catalytic converter will help convert toxic pollutants into less harmful substances. A replacement muffler will reduce noise levels and keep the vehicle safer by reducing road hazards. Finally, replacing the fuel injector will remove excess carbon monoxide from the fuel mixture, which reduces emissions. These three steps should solve the emissions problem.


Can I drive with an emission problem?

You can try to replace the catalytic converter yourself. But before doing so, please contact your local mechanic or auto repair shop. They may be able to diagnose the problem more accurately 

How much does it cost to fix an emission control system?

The answer is, “It depends.” It depends on the type of emissions control equipment you have and how well-maintained it is. The more complex your emissions control system, the more expensive it will be to repair or replace.

That being said, the average cost of fixing an emission control system is $1,000 per vehicle.