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Old 10-12-2015, 01:44 PM   #8
fdryer
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Join Date: Jan 2006
Location: NYC
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2003 L-Series 3.0L Sedan
Default Re: 2008 Astra - CA Approved Catalytic Converter - Unable to pass inspection

drinxx, unless you ask a licensed inspection station or visit NYS DMV to review state safety and emissions regulations (http://www.dmv.org/ny-new-york/smog-check.php), you may be distracted from whatever information is 'out there'. Some fear mongers here tend to spread misinformation, especially in relation to comparing California and New York. Personally, I do not see anything about New York state placating federal EPA emissions regulations by instituting their own against federally recognized rules. If you read NYS guidelines about emissions inspection, all vehicles from 1996 and on are required to pass emissions self tests using OBD II on every car sold in the USA. Your Astra meets this OBD II standard so NYS simply plugs in their state computer system to download the same information we all see when using a personal reader or scantool. NYS does not see any more information than what a generic reader displays. In other words, if the engine computer wasn't reset manually recently and the SES/CEL/MIL turns on and turns off during normal starting prior to the inspection station seeking OBD II info from the car, your car already passed emissions. The key phrase to remember; if the check engine light isn't ON and no pending errors are in memory, the car passes. Any 'P' type error code automatically fails emissions inspection.

The two items related to P0420 are the downstream (post catcon) O2 sensor and the catcon. Mileage has some bearing on when catcons wear out, any leaded fuel used or magic elixirs poured into the tank to boost power or provide cleaning, silicone products that enter the catcon and if the exhaust system has pinholes anywhere upstream of the catcon (flexpipe is one area). Nothing in the NYS DMV regulations mentions anything about catalytic converters whether they're California/New York "approved/certified/whatever" or not. As I understand it, you are free to repair or replace whatever is needed to have the OBD II diagnostics perform its own emissions self tests to pass with whatever is required. Not the most expensive catcon or high priced O2 sensor, just what's needed to accomplish the requirements to pass emissions. Nothing more, nothing less. In other words, a repair.

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