Mechanics

NOT GETTING CODES

1987 Oldsmobile Ciera

Engine Performance problem
1987 Oldsmobile Ciera 6 cyl Two Wheel Drive Automatic

i have a code reader and im not getting any codes from it. Its blinking the same code. How do I fix this?
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What is happening to the car? You say it's blinking the same code. What code is it?

It's the system pass code. 12
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