Q: emissions test came back as not ready on 4 obd monitors

asked by on January 23, 2017

My first emissions test came back as 4 obd monitors not ready. Egr, o2 sensor, evap system and catalyst. I had recently disconnected the battery to recharge it. After 2 and half weeks and 350 miles it now lists only 2 monitors as not ready, o2 sensor and catalyst. Is there a particular kind of driving that will trigger the last two? I had started with a combo of city and highway driving but was told by the station attendant that highway driving can reset the process. I only did city driving this last week which triggered the evap system. Any help you could give would be greatly appreciated.

Sincerely, Sean Dougherty

My car has 8100 miles.
My car has a manual transmission.

Here’s the drive cycles for your vehicle.

O2 and Catalyst monitor: Ambient temperature must be at 41 degrees or higher. Gas tank must be filled 1/2- 3/4’s full. Start engine and let idle for 5 minutes with AC rear defogger on. Turn off AC and rear defogger and allow the engine to idle until up to operating temperature. Drive vehicle until 56 MPH is reached. When at 56 MPH, release the accelerator for 10 seconds or longer. Accelerate again to 56 MPH. Keep the speed at 53-60 MPH for 10 minutes. Stop the vehicle and let it idle for 1 minute. Accelerate to a speed of 30-35 MPH for five minutes. Stop the vehicle and let it idle for 45 seconds. Accelerate to a speed of 53-60 MPH for 5 minutes. Allow the vehicle to roll to a stop without using the brakes. Allow the engine to idle for 45 seconds.

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

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

Out of nowhere my car decided it didn't want to start anymore.

You should first have the computer scanned to make sure the computer is not causing the no start and make sure the theft light does not stay on when key is in on position. If it does then the vehicle...

The dealership accidentally cut my car off, can I get a jump to start it again?

A jumps start certainly will not hurt your vehicle, however this suggests that you may have an issue with a weak or dead battery or possibly a bad alternator. As you may know, the alternator is responsible for charging the...

Transmission problem 3rd gear

Hey there. This is something your car will do when going into "safe mode" which can happen when the ECM detects something is wrong with any of the car's systems. This is a safety feature to keep you and the...

Related articles

A Buyer’s Guide to the 2012 Mazda 5
If If you’re looking for a vehicle that isn’t quite a minivan yet is bigger than a wagon, you’ll love the 2012 Mazda 5. With enough room for six adults, sliding rear doors that make it easy to get to...
Industry News for Automotive Techs: October 8-14
50 MPG Chevrolet Cruz Diesel, Mazda's G-Vectoring drive system, Uber and Volvo collaborate on autonomous cars, and Hubb's new reusable oil filter.
The Best Used Cars to Buy If You Just Got Your License
If If you are a new driver, congratulations on getting your license. Now, you need to think about what type of vehicle to buy. Ideally, you’ll choose a used car that isn’t overly expensive, and is reliable and safe while...