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rpmdiag
rpmdiag, Tech and Instructor
Category: VW
Satisfied Customers: 6985
Experience:  Since 1975
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P0102 Mass or Volume Air flow circuit Low Input 1) Replaced

Customer Question

P0102 Mass or Volume Air flow circuit Low Input
1) Replaced the Mass Air Sensor THREE times
2) Replaced the ignition coil TWO times
3) Cleaned the fuel injectors
4) Replaced spark plugs and wires
Still comes on. No vaccum leaks. wire voltage OK. Help!
Submitted: 4 months ago.
Category: VW
Expert:  rpmdiag replied 4 months ago.

Hi, I'm Ron and I will be helping you today.
Stand by for a moment while I prepare your answer.

Expert:  rpmdiag replied 4 months ago.

The problem can also be in the wiring/circuit or it can be a defective computer too. One great way to test the MAF output is with a scope.

See attachment. I gave you 3 to compare.

Thanks, Ron

Customer: replied 4 months ago.
The wiring is OK tested by a certified emission place. is there anything like a firmware update?
Expert:  rpmdiag replied 4 months ago.

There can be, like I said, it can be computer related too, either bad or in need of a flash update.

Thanks again and please remember to rate me 5 stars and DO keep this link in case you need me again later on.

Ron

Customer: replied 4 months ago.
who can do a flash update?
Customer: replied 4 months ago.
is this typical of the need for one?
Expert:  rpmdiag replied 4 months ago.

Most any shop with the right equipment and subscription or the dealer.

Yes, it is a common repair too.

Thanks, Ron

Expert:  rpmdiag replied 4 months ago.

By subscription I meant at the VW website to upload the software update you need.

Thanks again,

Ron

Expert:  rpmdiag replied 4 months ago.

Hi, I'm just following up with you to see if you have any more questions.
Thanks, Ron

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