OBD II Code 0101

Just as my '01 Blazer (4.3L) was turning 127,000 miles today, the
"Service Engine Soon" light came on. After shutting the vehicle off
and letting it sit for about a half-hour, the light did not appear
again at the subsequent start up. I do have a cheapie OBD II reader
which I bought a few years ago and have never had occasion to use
until today. Plugging it in revealed a code 0101, "Mass or Volume Air
Flow Cirguit Range or Performance Problem" according to the manual
that came with the reader.

So... what do I do next? Is it as "simple" as replacing the mass air
flow sensor or might there be a ton of other stuff going on here?

Thanks,

Mark
'01 Blazer LT

Nope. No K&N on this one. I did take things apart and cleaned
connections and the screen in the sensor itself with an aerosol
electrical contact cleaner. We'll see what happens now.

Thanks for your help.

Mark
'01 Blazer LT




On Tue, 16 Oct 2007 15:28:33 -0400, "Shep" <djsljsrn DeleteThis @capital.net>
wrote:

>Try cleaning it first with CRC maf cleaner, do you have a K and N air
>system?


>"Mark E. Bye" <fxdyna DeleteThis @hotmail.com> wrote in message
>news:5gn7h3lfftv6co3k025fqfrh03hvurah7g@4ax.com...
>> Just as my '01 Blazer (4.3L) was turning 127,000 miles today, the
>> "Service Engine Soon" light came on. After shutting the vehicle off
>> and letting it sit for about a half-hour, the light did not appear
>> again at the subsequent start up. I do have a cheapie OBD II reader
>> which I bought a few years ago and have never had occasion to use
>> until today. Plugging it in revealed a code 0101, "Mass or Volume Air
>> Flow Cirguit Range or Performance Problem" according to the manual
>> that came with the reader.
>>
>> So... what do I do next? Is it as "simple" as replacing the mass air
>> flow sensor or might there be a ton of other stuff going on here?
>>
>> Thanks,
>>
>> Mark
>> '01 Blazer LT