Q: 1995 Honda Accord - Failed emissions due to having 1500 of 900 NOx ppm. Is there an easy fix here? They are saying it will cost me

asked by on

My Honda Accord failed emissions - Everything passed except having 1500 / 900 (allowed) NOx ppm. Is there an easier fix than paying ~$150 for them to have it pass?

Thank you in advance.

My car has 109000 miles.
My car has an automatic transmission.

If you are producing too much NOX this means your combustion is running too hot. This is usually caused by the engine running too lean or the EGR system is not flowing enough to cool the combustion. You should remove the EGR valve and check to see if the port holes are clogged and clean out the ports of carbon and spray into the ports with combustion cleaner to help clean out the ports and valve. If they are not clogged and the valve is clean then you will need to find out why the engine is running too lean like the injectors are needing cleaned.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. 1995 Honda Accord - Failed emissions due to having 1500 of 900 NOx ppm. Is there an easy fix here? They are saying it will cost me

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Mechanic says I have multiple oil leaks. What could be the problem and the cost

If your engine has many different oil leaks then the first thing you should have done is to have a mechanic like one from YourMechanic inspect the vehicle engine and add oil leak detection dye into the crankcase and run...

Q: New battery drained of power in one week

If the battery is new and charging system output has been measured and is within specifications, the only reason a battery will discharge is if the car sits for a long period of time (batteries will self-discharge even if not...

Q: The code read P0341, how do I know if it's the chain or the cam sensor?

There is a technical service bulletin for the Acura TSX stating that the code may be caused from the timing chain getting stretched until the tensioner cannot keep it tight any longer. This is a result of not getting oil...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...