D@$& check engine/vsc trac/vss off

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About a month and a half ago, I had the infamous check engine -vsc trac/vsc off combo of lights. Tried several idea I found on these forums, to no avail. Took it to the mechanic, and after almost 1k, three sensors, problem solved. Now, all of the sudden, all three are on again. After the mechanic fixed it, I drove to Lubbock, tx and back from Austin, so I know this is not the computer catching up. Lubbock and back is almost 800 miles, and I have been driving daily for about a month since. I am pretty pissed after spending the money, only to have a new problem pop up.

 

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So now, without doing anything, all lights are off. Taking it to the mechanic tomorrow to have the diagnostic done, for free.

 

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Took the runner to the mechanic yesterday. The conclusion is another sensor, "behaving badly". The mech said that it is throwing errors randomly at first start up, but once warmed up, there are no issues. We both agreed that for now, we'll leave it as is. Each sensor is about $181.00 These are the upper end O2 sensors.