What does the emission system warning sign mean?
So more “tighten fuel cap”… brought the car home, drove for couple days; “emission system check” light came on. Very frustrated, called the tech and he asked me bring the car when there is warning sign. So went to the tech, he connected the tablet and it showed P0420 Catalyst System Efficiency Below Threshold.
Why does my car have an emissions warning light?
The emissions warning light being illuminated on the dashboard usually means a sensor on your exhaust system is failing, it can also mean there is an engine issue and this is causing an emissions warning.
What happens if you have a faulty emission control system?
In the case of a faulty emission control system, your engine will start giving warning signals, including strong fuel or gas smell, reduced engine power, or black exhaust fumes.
Why did the emission warning light go out on my Acura?
After about 3 restarts of the car around 2 days or so, the light went out and has not come back on since. If you received both warnings, the fuel cap and emmission systems check, than it very well might be just the fuel cap. The Acura dealer couldn’t check unless the emission warning light was on when I was at the dealer, and it wasn’t.
So more “tighten fuel cap”… brought the car home, drove for couple days; “emission system check” light came on. Very frustrated, called the tech and he asked me bring the car when there is warning sign. So went to the tech, he connected the tablet and it showed P0420 Catalyst System Efficiency Below Threshold.
The emissions warning light being illuminated on the dashboard usually means a sensor on your exhaust system is failing, it can also mean there is an engine issue and this is causing an emissions warning.
Why is my check emission system not working?
The emission control system wears and tears over the years and needs repairs. Familiarize yourself with the symptoms of a faulty emission system to help you detect and fix the problem. If you fail to look after components in your car, it can lead to several components failing which can cause the check emissions system.
After about 3 restarts of the car around 2 days or so, the light went out and has not come back on since. If you received both warnings, the fuel cap and emmission systems check, than it very well might be just the fuel cap. The Acura dealer couldn’t check unless the emission warning light was on when I was at the dealer, and it wasn’t.