How the check engine light (CEL) gets illuminated

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How the check engine light (CEL) gets illuminated
Franklin.Bowen@Gmail.Com 4 April 2005 15:32:16
	I just talked to a service guy at Subaru and he said: Every time you start the car, it does a full diagnostic and if any sensor is out of its valid range the CEL will be illuminated. The CEL does not store its state between car starts. I asked because our light came on. Since we were too busy at the time, the nearest dealership is 1.5 hours away, and there were no noticable signs of distress from the car, we let it go. A couple weeks later it turned off. I thought maybe they programmed the CEL to turn off after so many days but that is not correct since the state of the CEL is never stored and determined upon every start of the car. HTH someone, some day.
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Tg 5 April 2005 01:47:12 [ permanent link ]
	Your service guy is wrong, go to the OBD II web site and learn a little about the system....remember, the Subaru from '95 on uses the SAME diagnostic system as every car sold in the USA from '96.I am assuming you are in the USA. TG <franklin.bowen@gmail.com> wrote in message news:1112614336.885129.288950@l41g2000cwc.googlegroups.com...>I just talked to a service guy at Subaru and he said:> Every time you start the car, it does a full diagnostic and if any> sensor is out of its valid range the CEL will be illuminated. The CEL> does not store its state between car starts.> I asked because our light came on. Since we were too busy at the time,> the nearest dealership is 1.5 hours away, and there were no noticable> signs of distress from the car, we let it go. A couple weeks later it> turned off.> I thought maybe they programmed the CEL to turn off after so many days> but that is not correct since the state of the CEL is never stored and> determined upon every start of the car.> HTH someone, some day.>
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Franklin.Bowen@Gmail.Com 7 April 2005 16:40:32 [ permanent link ]
	I assume you mean this: http://www.obdii.com/background.html#Check%20Engine%20Light Ah crap! Why did you have to spoil my simple world? Oh well, the light has been off for months now so I will just play the waiting game. Thanks!
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How the check engine light (CEL) gets illuminated

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