Why did my car fail the smog test?

Car has 50,000 miles and is in flawless shape- always serviced and use best synthetic oil and premium gas. he said computer need to reset itself since i only drove it since recharge. I trust smog guy – have used him for 15 years; he told i need drive on freeway for 25 miles before taking it in so it resets. I only drive it 5 to 10 miles per week.

Why is my smog check OBD 2 incomplete?

There are several reasons why the monitors may be incomplete. If your car has recently been repaired for a problem that set a DTC (check engine on) and the technician cleared the DTC, he also erased the monitors. Also, if battery has been disconnected, replaced or needed a jump-start, the monitors may be erased.

When does Smog Check Come Out the tailpipe?

It does not test what is going on when the engine is cold, idling, decelerating, etc. Also, not all the smog a car makes comes out the tailpipe.

How long does it take to complete a diesel smog test?

Any two (2) monitors may be incomplete on 2007 and newer diesels. Some tests only run when the car sits overnight, or is allowed to cool down for several hours. Most cars will complete the monitors easily with the above methods, but rarely it will take up to several weeks before they are complete.

What happens when your car fails a smog test?

When your car gets a smog test, one portion of the test involves connecting the smog test machine to the car’s computer and checking if there are any DTC’s, and also checking to see if the monitors are ready. If they are not, the vehicle fails the test, because there may be problems in the system that can’t be reported by the computer.

Why is my Chevy Silverado not running emission monitor?

We understand your Chevy Silverado is having difficulty getting certain emission monitors to complete (become Ready). The emission monitors are programmed to run while your vehicle is being normally operated. However, due to different driving habits, the criteria required to run a monitor may not always be met.

What is mode 6 on Chevy Silverado emissions monitor?

Mode 6 (emissions diagnostics tool) is especially helpful when trying to complete emission monitors. A well trained smog technician will be able to use Mode 6 to manually run emission monitors.

What kind of vehicle is required for smog check in California?

California requires all vehicles to undergo a smog inspection EXCEPT: Gasoline-powered vehicles model year 1975 and older. Natural gas-powered vehicles weighing over 14,000 lbs. . Diesel-powered vehicles that: Are model year 1997 and older. OR Electric vehicles. Motorcycles.

What’s the best way to do a smog check?

Basically, drive the car. There are specific driving conditions that must be met in order to run various tests, but most of them can be met in normal driving. One thing that helps is to cruise at a steady speed for several minutes, so a ten-mile freeway drive in light traffic is a good bet.

Can a 2008 Silverado get through an emissions test?

Maybe I’m missing the point, but if a 2008 wouldn’t get through an emissions test I believe I’d be handing the keys to the service writer at the dealership and saying “Make it work.” It’s under warranty. Exactly!! That is what federal Emissions warranty is for. So long as it has not been modded, let them fix it.

The vehicle has approx. 200K miles. (the odometer is broken) It seems to start and run fine, but it failed to pass a California smog inspection.

Why was my NOx too high on the smog test?

The only emission that was above the limit during the smog test was NO, however both HC and CO measurements were about halfway between “average” and maximum. A 2nd website said, “High NOX emissions are almost always due to a defective EGR valve (or some component that controls the operation of the EGR valve).

What to do if your smog test is too high?

1. Check for fuel control by watching O2 sensor operation. 2. Check the EGR system for proper operation. 3. Perform a catalytic converter efficiency test. 4. Repair as required. I’m a CA Smog Tech, so post or PM me if you need additional help or direction. Sounds like you just repeated what Mike said.

Can a Honda Civic fail an emissions test?

[…] site that specializes in explaining the way a car runs created the article “DIAGNOSE – EMISSIONS TEST FAILURE (Smog Check failure)” to help explain why a car can fail an emissions test and require emission […] Failed emissions 1994 Honda Civic SI -1.6 ltr. – HELP!!!!! – Honda-Tech says:

What happens if your car fails the smog check?

The last thing you want is to have your smog check redone and still fail. It’s a common problem when aftermarket parts are used in an attempt to save money, however the components aren’t always up to the California emissions standards. You have one other option if your car fails its smog check.

How long does it take for a smog check?

The tester has to plug in a diagnostic computer and check for codes related to emissions failures. They need to use a sniffer tester to check vehicles for safe levels of hydrocarbons, nitrous oxides, and other pollutants. All in all, you can expect your smog check to take around 20 to 30 minutes. What Happens if My Car Doesn’t Pass a Smog Check?

Where can I get a smog test on my car?

You can perform a Google search for ‘Car emission testing near me’ or ‘smog check near me’, then browse the results online. You might come across some incorrect results that way, so the more reliable source for test facility information is to visit the official California Bureau of Auto Repair site.

How can I tell if my car is smogged?

Check your tailpipe emissions with a sniffer, or car emission tester. Check if your Check Engine Light is illuminated on your dashboard. If you’ve heard of a car getting ‘smogged’, this is what they mean. Having your car smogged is the process of having a smog check or car emission test performed. How Often Do I Need a Smog Test?

The vehicle has approx. 200K miles. (the odometer is broken) It seems to start and run fine, but it failed to pass a California smog inspection.

How to know if a Chrysler is ready for an emissions test?

In order to determine if your Jeep, Dodge, or Chrysler vehicle is ready for an emissions test, you can either use an OBDII scanner or, if one is not available, check the MIL (check engine light). At A Star Smog, we will use an OBDII scanner to conduct a smog precheck. Turn on the ignition to ON, but do not start the engine.

In other words, in most cases, when an emission monitor setting problem has been identified by BAR or CARB, the smog machine is already programmed to bypass the testing of said monitor.

Can a car pass with only one smog monitor?

Note that a car can pass with some incomplete monitors…a maximum of one on 1999 and earlier cars, and only one ( The Evaporative System monitor) on model year 2000 and later gasoline powered automobiles. All monitors must be complete on 1998-2006 diesel powered vehicles.

Can a DTC erase a smog check monitor?

If your car has recently been repaired for a problem that set a DTC (check engine on) and the technician cleared the DTC, he also erased the monitors. Also, if battery has been disconnected, replaced or needed a jump-start, the monitors may be erased.

In other words, in most cases, when an emission monitor setting problem has been identified by BAR or CARB, the smog machine is already programmed to bypass the testing of said monitor.

Why did my car fail the smog test?