3 Symptoms of a Honda Emission System Problem

3 Symptoms of a Honda Emission System Problem

around the world are lasting longer as advancements continue being made in the industry.

Honda is one of the top brands in the world for longevity. While the average vehicle can make it to the 150,000-mile mark, Hondas can last between 200,000 and 300,000 miles.


If you have a Honda, you need to maintain your vehicle if you expect it to last this long. Keep reading to learn the signs you have a Honda emission system problem.

1. Check Engine Light Is On

The most obvious sign of a Honda emission system problem is when the check engine light is on. The check engine light warns of a detected problem in the vehicle.

The downside is that this illumination doesn’t provide specific details. You must opt for Honda repair services as soon as possible to diagnose the problem.

A Honda technician will scan the vehicle for diagnostic trouble codes (DTCs) to identify the issue. It’s possible that the check engine light is on for a different reason.

Additionally, if you live in an area where emissions testing is required, your Honda may fail the test if you have an emission problem. Failed emissions tests occur when increased pollutants are emitted from the vehicle.

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2. Unusual Exhaust Smoke

Without regular emission system maintenance, your Honda may put off unusual exhaust smoke. Pay attention to the color and consistency of the exhaust smoke coming from the tailpipe.

An emission system problem causes the exhaust smoke to be darker, thicker, and have an unusual color. Your Honda likely has an issue if you notice excessive smoke, strong odors, or white or black smoke.

3. Reduced Fuel Efficiency

Another symptom of emission Honda problems is reduced fuel efficiency. If your vehicle is consuming more fuel than normal, it could be a sign of an emission system problem.

Different types of emissions problems could be causing this. However, reduced fuel efficiency can also be caused by:

  • Old engine air filters
  • Clogged or damaged fuel injectors
  • Old or incorrect engine oil
  • Underinflated tires

Some of these are easy fixes, but to understand the culprit, you need to schedule a Honda service appointment.

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How to Fix a Honda Emission System Problem

If you notice any of the above symptoms, it’s time to fix your Honda emission system problem.

You should address these issues promptly. Ignoring the problem can lead to more serious damages, such as vehicle failure. Failing a vehicle emissions test also makes you non-compliant with environmental regulations.

An emission system can fail because of:

  • A faulty catalytic converter
  • EGR system issues
  • Evaporative emission control (EVAP) system leaks
  • Fuel system problem

A professional Honda technician will have the expertise necessary to fix your problem and get you back in your vehicle quickly.

Honda Care: Understanding When There’s an Issue

Knowing how to spot a Honda emission system problem is beneficial. If you take your car in for servicing quickly, you can avoid vehicle failure.

When your check engine light is on, you see unusual exhaust smoke, or notice reduced fuel efficiency, don’t ignore it. Maintain your vehicle regularly to prevent these problems altogether.

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