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1988 F250 5.0L maunal trans 193K miles
On KOEO I'm getting code 56 which the book say is "MAF circuit above max voltage".
What does that mean and what can I do about it?
I'm also getting other codes, but this is first.
Yup - did it at least twice - got the same code each time. Also got 67 "NDS circuit open with A/C on during set test" and 85 "Cannister Purge circuit failure" and some more that look like auto trans code.
All appear to be repeatable. I haven't don KOER.