Question about 2007 Audi A6 Avant Wagon
My emission control system light is on what can be the problem and what must I do
You need to scan the codes to find what the fault is. If you have access to a VagCom you can get the codes yourself. Otherwise take it to AutoZone (they sometimes will check the codes for free), the dealership, or a smog test station and get the codes checked.
Posted on Jul 23, 2013
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Posted on Jan 02, 2017
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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.
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