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International Automotive Technicians Network

Automotive Emissions Forum

Professional automotive forum for discussion of automotive emissions, on-board diagnostics (OBD2), and emissions testing programs around the world. The discussions often cover both the non-technical aspects (such as enforcement, automotive politics, and legal), as well as the technical aspects of emissions and emissions-related repairs, including the differences between vehicle certification and the various inspection and maintenance programs around the world. This forum is for experienced automotive repair professionals only, membership required.

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Recent Automotive Discussions in the Automotive Emissions Forum

LPG (propane)and CNG modified vehicles; legal or not?
03/12/2018 in the Emissions Forum
Hello emissions forum. I never post here but am active on the other forums. I figured this was the forum to ask this question. For the states and provinces that have emissions testing, is there some sort of loophole for CNG (compressed natural gas) or LPG...
ESP California OIS not reading vehicle data
03/07/2018 in the Emissions Forum
So in the last month we have had a few vehicles that our machine won't communicate to perform the inspection. I have verified the ability to communicate with other scan tool devices as well as unplugging the tester with engine off and installing OBD 2 plu...
Diesel DPF system California, can it be removed
03/06/2018 in the Emissions Forum
If someone buys a truck from State facility, does DPF system have to stay on it ???? Truck sold to a auction type Co. first, then truck dealer bought, then end user bought it. Just need to know Ken.
Inspector Follow-up Pass Rate (FPR) Summary keep dropping
01/24/2018 in the Emissions Forum
Hi every body i relay needed help on my FPR , I am a test and repair tech. my avg time on bar 97 test is 12-18 minute , my avg test on Bar OIS is less than 12 minute. I never test or pass any vehicle illegally, or over condition any vehicle, I test the ve...
01/15/2018 in the Emissions Forum
Happy New Year to fellow IATN members. Checking in to see average time for most STAR stations on OIS testing and still maintain above average standards. Most customer states, you just plugged it in. Can you do it in 10 minutes? Why do you take so long? My...

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