DTC code P0102 1999 Buick Regal GS

I have a P0102 engine code on my 1999 Buick Regal. Any idea on where to check first.:screwy:

102 or 201?

DTC P0102 Mass Air Flow (MAF) Sensor Circuit Low Frequency
DTC P0201 Injector 1 Control Circuit

P0102, Sorry for the confusion.

I have a P0102 engine code on my 1999 Buick Regal GS. I cleaned the MAF sensor but no difference. 2 years ago I replaced the engine with one from a junkyard and kept the same throttle body. Now I find out the MAF sensors are different. It had run fine, code free until 3 months ago. Car runs fine when warm but has a ruff idle when cold. I have saved the original supercharger and throttle body and will replace the throttlebody tomorrow when I get the new gasket. Any idea on where to check next?:screwy:

7futures,

Your two threads concerning what appears to be the same issue have been merged together. Please try to keep one post only on the same issue to cut down on confusion and possible redundant replies from our forum members.



BE COURTEOUS: AVOID DUPLICATE POSTS
Do not post the same discussion more than once on a discussion forum or on many forums. Duplicate discussions can be frustrating for other members, especially for those whose time and energy is limited. Weeding through the same discussion in multiple locations can be not only frustrating, but down right annoying. Duplicate discussions will be deleted. Reposting the same message repeatedly can be interpreted as SPAM and could result in the loss of your membership. Also be conscious of your fellow members and avoid making meaningless posts for the sole purpose of increasing your post count.

I replaced the throttle body with its orginal maf sensor and now the car runs fine :)