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My check engine light will not go out therby not alllowing me to pass emissions to get my tag. This is the 8th year that I have had this problem. I ahve spent hundreds of dollars trying to fix this problem. I ahve a total of 90 people who have the same problem with theire mazdas ( not just the mpv) as well
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Did you scan for codes to see if there were any besides the catalytic convertor? Unless she's running leaded gas it shouldn't have to be replaced yearly. Is she using an additive that puts lead into the system? I would also check the wire hareness for the O2 sensors. It's not unusual for them to wear and rub a bare spot in the insulation. This will case a short and give a false reading to the computer. Is there any chance that there is a leak in the exhaust? If air is getting in at a joint or a small pinhole ti will screw up the O2 sensor readings.
Hope this helps.
Probably not a cheap fix. The car will not pass the test if the light is on during the test. The light is on when the computer has a problem that will affect emissions or performance. You would need to have the computer scanned for trouble codes then fix the problem. Once the problem is fixed and the code is erased, the light should stay off.
You will need to get it scanned and get the codes for the problem. If it failed the test due to emissions I would almost guarantee it will be your oxygen sensor or cat
My Audi Q7 has an V8 Fsi Engine and the check engine light is turned on ince years. But I cannot pass inspections, so year after year I am hvg those problems. Audi cannot find the problem! Better no more Audi!!!!
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