I'm getting a Check Engine light on my 1995 A124 (wiring harness replaced, by the way). It's the #10 code: Low/High voltage to Mass Air Flow Sensor.

I also have a so-so battery. I'm wondering if the battery could cause this code.

The car drives fantastically and the code has only recently shown up.

Thanks for any insight out there.

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Douglas
New York

What is the battery voltage with the car off?

And what is the battery voltage with the car running?