Quote:
Originally Posted by RICHARD TILL
No headers. The car is bone stock with 121k miles. I immediately get the code 31 after starting the engine. No codes with the old oxygen sensor connected and hanging loose. Front of car is on jack stands. I never do anything electrical without disconnecting the negative battery cable.
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Battery connected won't matter.
Something's just not right. O2 sensor causing a CSS error?
Clear you mind.
Start over.
Clearing codes only takes
10 sec. No need for 30min.
How are you reading codes? Counting flashes?
Redo and recount. Remember 12 is at the end of all
before it repeats.
When replicating the 31 and reconnecting the bad sensor
to see the 31 go away make sure to then connect the new
sensor back up and see the 31 come back (so called capping run)
Puzzles are meant to be solved