Question about 1999 Saturn SC

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I have a 2001 Saturn. It failed emissions because

I have a 2001 Saturn. It failed emissions because the check engine light was on. The light went out, but the computer still read trouble codes PO341 and PO442. If I drive the car for a while will these codes clear? It passes all the other emission tests.

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Go get your engine fixed at Jiffy...........You know they got a sale right???

Posted on Apr 21, 2009

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Posted on Jan 02, 2017

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Failed emissions test


First step is to have the code or codes read.If the "check engine light" is on there will be a reason and should be a code or codes to be read.Once you have the codes,you can determine the correction needed to get that "check engine light" out and a valid emissions test completed.Get back to us with the codes found.

Apr 28, 2017 | Saturn Vue Cars & Trucks

1 Answer

Cavalier 2001, failed emission, replaced oxygen sensor, failed again


take it to a real mechanic then. thats the answer

Nov 10, 2017 | Cars & Trucks

1 Answer

2001 Toyota MR2 Spyder. In Maryland, you have to do emissions. The first time it failed because I needed to replace an 02 sensor. When it went back, it failed because my check engine light bulb was out....


When you first put the key and turn it to ignition, all of your dash lights should light. That is how you check your lights. It is not an easy thing to replace. The dash lights are replaced as a unit. Check with your local auto shop for the part or you Toyota dealer.

Dec 10, 2017 | 2001 Toyota MR2 Spyder

1 Answer

I have a 2001 Saturn SC2 that I need to swap out a motor in and want to know if there are any other motor or motor/tranny combinations that will work in it. Example would be the ion redline?


If you do not use the same stock engine you will have smog issues. If a smog tech notices they will automatically fail your vehicle. Also the emission standards set for your vehicle may be different than a Ion redline for example. Different states have different smog laws so check before you swap.

Jan 14, 2011 | 2001 Saturn SC

1 Answer

Need to know how to check the oxygen sensors on a 1996 saturn sl


Don't know if this will answer it. O2 sensors send info to the computer to make adjustments to the emissions system. Over time the O2 sensors fail which cause the computer to light the "Check engine" light. Originally the "Check engine" light was dedicated to an emission system fault. Now manufactures use it for a variety of abnormalities. To know what the "check engine" light means you have to either take it to a mechanic or buy a OBDII scanner (around $100) and read the code yourself. I like to read my own codes. These scanners are good for all modern cars. Instructions are included EZ to follow.
Long story short, don't worry about it the check engine light will come on when O2 sensor fails. Happy motoring!

Mar 11, 2010 | 1996 Saturn SL

1 Answer

Failed Emision test


po442 is evap emission control system leak (small) 1 of the lines for emissions is leaking. po455 is-- emission control system leak (large). turn off light with code scanner after it is fixed.

Sep 01, 2009 | 2001 Dodge Caravan

2 Answers

Emissions Failure-Multiple Codes


take you car over to auto zone or one of the part stores that do the free computer test. They will do it for free and sell the part to you for way less money.

Jan 29, 2009 | 1998 Saturn SC

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