Question about 2002 Saturn L-Series

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My service engin soon light is on and i hooked a code reader up to it and it wont read my computer. i checked my fuses and they are fine. what could be wrong with it?

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Your code reader needs to be CAN compliant. Controller Area Network.If it is check if your cigarette lighter works. Usually the same fuse.

Posted on Sep 27, 2009

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Check engine light comes on and off, these are indication that there is some error code stored in your vehicles ECM. The engine module computer needs to be scanned. These will give the code and as per the error code the further problem can be detected and confirmed. The engine light indicator blinks or remains steady on dash when engine computer noticed any problem with any engine electrically operated components.


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These details will help.

Thanks.

Nov 28, 2012 | 1999 Acura CL

1 Answer

Service engine soon light appears after cleaning with autoboss, i was told cranshaft sensor error but the car is perfectly working fine except the SES light that is always on


Hello
When the service engine soon light (Also called the check engine light or engine management light) is turned on this is to alert you to the fact that Powertrain Control Module (computer) has detected a failure somewhere in the systems it controls you may not feel any difference in the way the engine runs, this can be the transmission or the engine or emission system, there are fault codes set in the modules memory for these faults. What needs to happen now is to have the powertrain control module scanned with a special tool called an OBD2 electronic engine control scanner or a OBD2 code reader. Once the code(s) are read then you must perform the diagnostics for each code and make the appropriate repairs based on the findings of the diagnosis that was performed, this is called doing "Pinpoint" testing.

Oct 14, 2012 | Nissan Quest Cars & Trucks

1 Answer

Service engine soon light comes on once in awhile, when this happens at the stop lights it feels like it wants to take off and has a slight vibration. I had it hooked up to the computer and did not show...


Hello
When the service engine soon light (Also called the check engine light or engine management light) is turned on this is to alert you to the fact that Powertrain Control Module (computer) has detected a failure somewhere in the systems it controls you may not feel any difference in the way the engine runs, this can be the transmission or the engine or emission system, there are fault codes set in the modules memory for these faults. What needs to happen now is to have the powertrain control module scanned with a special tool called an OBD2 electronic engine control scanner or a OBD2 code reader. Once the code(s) are read then you must perform the diagnostics for each code and make the appropriate repairs based on the findings of the diagnosis that was performed, this is called doing "Pinpoint" testing.

Sep 10, 2012 | 2003 Cadillac Deville

1 Answer

Service engine soon light is on does not show any codes what could it be


The service engine light should only come on when the PCM detects a fault in one or more of the systems it controls. It should also store codes.
If a simple code reader was hooked up to read the codes perhaps the code reader is only good for the generic codes and your PCM has model specific codes stored in it. Some code readers cannot read those codes. A shop scanner may be needed to get codes.

Sep 25, 2011 | 2004 Chevrolet Monte Carlo

1 Answer

Service engine light is on even after disconnecting the battery for five minutes


The service engine light is on because the built in onboard diagnostic system it trying to tell you that it has diagnosed a problem and stored it as a trouble code in the vehicles computer. Disconnecting the battery wont make it go away. You should get the codes read, and the code reader can reset the light, but if the problem is still there the light will come back on pretty soon. Most major auto parts stores will read these codes for you for no charge. Write down the code that is in your trucks computer so you will know what the computer logged as trouble.

Dec 18, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

My Escalade is getting poor gas mileage. The service engine soon light is on. I took it to a shop and they hooked it up to a computer and was told it was a generic fuel system code. They suggested I put...


take it to a shop that has a real time scan tool not a code reader, generic code tells you nothing, yu need a reading on all sensors and actuators,

Nov 23, 2010 | 2002 Cadillac Escalade

2 Answers

03 mercury mountaineer, service engine soon light came on. i was told it needed a oil change . we did that , now how do i get the light to go off ?


Your Service Engine Soon light has nothing to do with reminding you to change your oil. The light is controlled by the ECM (Computer) in your vehicle. It monitors various sensors in your engine and compares them to variables or programs that is in its memory. When something is not registering correctly or is outside of its parameters it will turn on a MIL(Malfunction Indicator Light)or in your case a Service Engine Soon light. You will need a OBD II ( On Board Diagnostic) reader or scanner to hook up to your diagnostic port under your driver's side footwell to read what code the ECM is putting out. Than with the code the mechanic can look up the code to see what part is sending a malfunctioning. The scanner can also read and erase the code too. You can have your code pulled up with a OBD II scanner for free from any AutoZone store.

Jun 03, 2010 | 2003 Mercury Mountaineer

1 Answer

Service soon engine light is on and it wont go off.


Did you have the computer checked to see what code or codes come up? If not and you have an Advanced Auto store near by they check computer codes for free. They hook up their code reader and it shows the code or codes and lists what the code means.

Jul 23, 2009 | 2006 Ford Fusion

1 Answer

1994 Buick Lesabre service engine soon light. Can't read code.


I found several shops in my area, Albany, NY that had the older code readers. It worked fine, and cost me $30.00. It showed a bad O2 sensor that I replaced myself. I suggest you go to a reliable shop. Auto Zone/Advance etc.. do not have the right code readers. Joe

Feb 01, 2009 | 1994 Buick LeSabre

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