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Yes if it is emissions related.

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Q: Will your car fail the emissions test in IL if the check engine light is on?
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Related questions

Can your car be tested for emissions if your check engine light is on?

It will fail most tests if the light is on.


Can car still fail emissions if check engine light is off?

Yeah, it can. If something is wrong with your emmision control system, your car can still fail emmisons, but the check engine light doesn't have to be on.


What will happen if you remove your catalytic converter on 1999 s10 2.2?

Your check engine light will come on and you will fail emissions.


Can the fuel filter fail emissions?

A dirty fuel filter could force a lean condition causing the check engine light to iluminate. In which case the vehicle would fail an emissions test.


What happens when you remove catalytic converter from ford freestsr 2004?

The check engine light will illuminate and you will fail an emissions test.


Can you take the emission test in Tennessee with a check engine light on?

Yes, but you will fail it. The check engine light indicates there is something wrong with the emissions controls on the vehicle. Seek professional help for diagnosis and repair.


How long after you clear a check engine light can you pass emissions?

It depends what caused the check engine light to come on. If there is something seriously wrong with an emission control component, simply clearing the code will not effect the results of an emissions test - the car will probably still fail. On the other hand, some codes for minor problems might not even cause the car to fail.


Can you disable Secondary Air Injection Pump on a 2000 chevy S10?

You can but it will cause the check engine light to illuminate and the vehicle will fail an emissions test.


Would service engine light come on if gas cap bad?

On some vehicle it does as it is supposed to be vented through a canister and not the cap for emissions reasons. Another reason you fail a smog test if check engine light is on.


What is wrong when the check engine light is on?

The computer has detected a problem with the emissions controls. Have the computer scanned for trouble codes. Get this fixed, as it can cause other parts to fail, as in, the catalytic converter, O2 sensor.


Why would a Hyundai check engine light come on?

It means the car's computer has detected a malfunction. Could be serious, could be simple. You should bring it somewhere to have the codes read. Sometimes you can have it done for free at a local car parts store. If the check engine light is on, your car probably will fail emissions, in case you need to get that done soon.


Can the 2001 blazer only use the stock gas cap?

Using an incorrect fuel cap may illuminate the check engine light giving you a code for an EVAP leak and you will fail an emissions test.