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My check engine light does not pop on when I insert my key but all others do in my 2004 Lincoln LS. Can this be an easy fix or a more serious and complicated fix? Not able to pass smog due to this issue.

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  • Expert
  • 125 Answers

Sounds like the bulb is probably burned out some cars you can replace the bulb and others are soldered in you can still replace them but they are a bigger pain

Posted on Apr 21, 2019

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6ya6ya
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Posted on Jan 02, 2017

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keemo68
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SOURCE: Jetta failing smog due to non communication with OBD - Suggestions?

the no data error can be contributed to a bad interface cable or the scaqn tool was configured wrong and therfore could not connect to the ecm. I would recommend having a scan done again by a certiefied volkswagon tech chances are the mechanics used the wrong adapter cable or reader card. your smog problem could be that your evap canister is clogged therfore gives a bad reading.unfortunately you have to have a scan done but try an independant small shop that delas exclusively with foreign cars such as porche andd mercedez. the will have the correct scan tool and will be much cheaper than a dealership. your cost should be no more than 50 dollars US ... please rate this. thanks

Posted on Sep 23, 2008

odiebugs
  • 949 Answers

SOURCE: 2000 Saturn SL2 fails smog due to failure of OBD Self test

Some vehicles require very specific drive cycles (called "drive traces" if you perform them on a road simulator or dyno) to activate certain self-checks like the catalyst and EVAP monitors. As a general rule, doing some stop-and-go driving around town at speeds up to about 30 mph followed by five to seven minutes of steady 55 mph highway speed driving will usually set most or all of the monitors. Consequently, if you're checking an OBD II system and discover that one or more of the monitors have not run, it may be necessary to test drive the vehicle to set the remaining monitors.

You should talk to a good emission tec, if this is not throwing a code, it is hard to say if that one of the components could be bad. O2,pump,convert, HeO2, every part of the emission system.

With a 1000 miles, and doing what is says above just before the test, and ending driving at the test
should be plenty. If it is not, you will have to have each emission part checked, or when the computer
is plugged in it might show a code that did not trip dash light.

Posted on Mar 27, 2009

jaysonemanme
  • 500 Answers

SOURCE: my check engine light does not flash when i turn key before start

bulb is probably blown... you have to remove the instrument cluster to change the bulb

Posted on May 23, 2009

  • 316 Answers

SOURCE: The ?check engine? light came on, what does this

You will never pass a smog test if a check engine light is on. The light being on says you failed before they did anything to your vehicle. Take the vehicle to your local autozone. Autozone will scan the vehicles computer and get the codes that are causing the issue, and they will do it for free. After you make the repairs, you will need to get the computer reset. Autozone will also reset it for you for free.

Posted on Jun 26, 2009

toneman2121
  • 775 Answers

SOURCE: check engine light on-code says egr valve is bad

the egr system consists of control circuits as well as the egr valve itself. troubleshooting will have to be performed in order to pinpoint the fault. the valve may just need cleaning. there may be damage in the long run since the egr system introduces exhaust gas to the air intake to reduce combustion temperatures.

http://www.aa1car.com/library/egr.htm

Posted on Apr 21, 2010

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Well ---PO 452 is still FTP Sensor Circuit Low Voltage Detected
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I locked my keys in my 2004 lincoln ls trunk, how can i get in?


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I have a 2004 Lincoln LS 3.0 6 cylinder. My wrench light


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My 2004 lincoln ls makes a rattling noise for a few seconds everytime it changes gear up to about 50 mph. I'm not sure what to do


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