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liu hua
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Reged: 05/11/2012
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Posts: 20
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Why would a check engine light be on?
06/03/2013 07:47
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Car diagnostic tools and OBDII scanner
The check engine light comes on and stays on when a problem is detected by the self diagnosis system of your vehicle. Generally, the problem is in the emissions or something that is affecting the effectiveness of the emissions, but other causes can trigger the light to come on, too. To determine the cause, the vehicle will need to be taken to AutoZone or a shop that has an OBD2 scanner, or for 1995 and earlier models, an OBD1 scanner, While a scanner will not give you the magic answer, it will give you a code that narrows down the problem area.
A flashing check engine light is an indication of a severe misfire or problem that is likely to harm your engine. Immediate diagnosis and service is needed.
Some specific causes for the light to be on are:
Gas cap left off, not tightened, not installed correctly, or needs to be replaced.
02 sensor.
Engine misfire - error might clear itself after 3 complete warm-up cycles; not restarts, but warm-ups.
At start up for a bulb check - Should not stay on.
Problem in the emission system, including clogged exhaust or the catalytic converter not functioning properly:
Dirty/clogged air filter.
Dirty MAF sensor.
There are pages and pages of items that can cause a check engine light to come on. Having it checked with a scan tool will narrow down the problem area.
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Manfred M.
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Reged: 09/04/2002
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Posts: 7656
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Loc: Nordbayern ( zwischen Nürnberg und Regensburg)
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Are you on drugs ?
[re: liu hua]
06/03/2013 09:29
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Hello.
Are you on drugs?
What deals OBDII with the V8?
Greetings free of drug...
V8 fahren ist wie älter werden - gelegentliche Inkontinenz
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Re: Why would a check engine light be on?
[re: liu hua]
28/03/2015 07:03
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Auto OBD2 Tools
In my opinion, there are 5 ways to solve the problem. One: Replace Oxygen Sensor, Two: Loose or Faulty Gas Cap.Three: Replace Catalytic Convertor.Four: Replace Mass Airflow Sensor.Five: Replace Spark Plugs and Wires.
Edited by Jackie Smith (28/03/2015 07:04)
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Re: Why would a check engine light be on?
[re: liu hua]
29/04/2015 04:46
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i am interested in what you write,you mean i should buy one Outils De Diagnostic OBD2.
____________________________
Outils Scan de Diagnostic Voiture
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Re: Why would a check engine light be on?
[re: liu hua]
22/09/2015 04:28
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I just got a new one from obd2warehouse.fr,and i feel good,if you need ,you can see there
Outils De Diagnostic Auto
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Mark Hanman
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Reged: 10/09/2010
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Posts: 282
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Loc: Costa del Poole
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Re: Why would a check engine light be on?
[re: Jackie Smith]
24/09/2015 20:53
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I don't think those toys that make you feel s good, work on cars. And the things you sniff are probably rotting your little brain.
85 WR quattro
90 V8 Silver, 91 V8 Black, 93 V8 Lago
93 100e quattro V6. Titan, i think
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Re: Why would a check engine light be on?
[re: liu hua]
21/10/2015 04:26
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Good information,and i feel good.
Outils De Diagnostic Auto
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Re: Why would a check engine light be on?
[re: Jackie Smith]
08/06/2016 10:00
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I have the same problem did you find a solution?
Audi leasing
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Re: Why would a check engine light be on?
[re: liu hua]
20/07/2017 11:45
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diyobd2.fr have been change to obd2france.com
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