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will a car pass emissions test in Washington with a non functioning obd system but with the cat still there?

In other words, do they have to do the obd test, or can they do the test where they test your exhaust directly?

Answer:
hi, while below ‘gas ratio sensor’ you mean your oxigen or ‘lambda’-sensor placed interior the exhasut pipe (there is probably 2 of those), then i might say, the try itself can not injury those components (they stay a procedures from try kit). besides the fact that, those sensors are robotically very susceptible because of fact of their ceramic coating. i do no longer comprehend the emission diagnostic approach in Illinois (nor everywhere in u . s . a .), yet while the sensor became malfunctioning during the emissions try, i think of you have got failed the try (readings from the exhaust analyzer might oppose from those of the lambda-sensor-> your engine administration can not supply the splendid combination from incorrect alerts). So, your mechanic would be splendid with twist of fate. of direction it must be, that somebody from the try workers became interior the area of the sensors, and broken it by the form, yet you could no longer practice it when you left the try website 🙁 with the aid of the way: lambda-sensors must be replaced a minimum of each and every one hundred.000-a hundred and fifty.000 km-s or a minimum of three-4 years. they are very gentle components, in the event that they are bent, dropped or in any way deformed, they are long previous 🙁 I say, once you pass the try next time, you ought to get it/them replaced, for you would be wanting it besides (once you do one hundred.000 km in 2 years). once you have doubt that your motor vehicle is taken care of in a splendid way on the try website, you ought to shop your eyes on people who’re engaged on the vehicle (around the exhaust). superb Regards