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Random stall code 23, code 23 abnormal voltage input from

Customer Question
random stall code 23 JA: Just...
random stall code 23
JA: Just to clarify, what's the exact code? And have you tried to reset it?
Customer: code 23 abnormal voltage input from maf. reset code displayed again
JA: What is the model/year of your Subaru?
Customer: 1991 Subaru legacy sedan fwd
JA: Are you fixing your Legacy yourself? What have you tried so far?
Customer: I haven't tried anything but pulling the code to get started. yes I am fixing myself
JA: Anything else you want the mechanic to know before I connect you?
Customer: it stalls then imediatley starts back up hesitates for a second then is fine until it happens again
Submitted: 4 months ago.Category: Subaru
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Answered in 13 hours by:
7/26/2017
Subaru Mechanic: tamaz, Subaru master technician replied 4 months ago
tamaz
tamaz, Subaru master technician
Category: Subaru
Satisfied Customers: 1,290
Experience: Subaru certified,ASE Master technician,25 years experience
Verified

Hi ,this code with the symptoms usually means a fault with the mass air flow sensor,before replacing this you may want to remove and clean hot wire which picks up air flow it may be dirty and be causing all the problems.When you remove it clean with a carburetor type cleaner and let it air dry do not touch or use compressed air to clean,reinstall it and see if it helped if not it's time to replace MAF,thanks for your time.

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tamaz
tamaz
tamaz, Subaru master technician
Category: Subaru
Satisfied Customers: 1,290
1,290 Satisfied Customers
Experience: Subaru certified,ASE Master technician,25 years experience

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