Code P0129 ??

[BPfromFLA]

Last night my engine light came on (about 3 miles after i filled the tank w/ 93 octane) I checked the code this morning and it was P0129.
I don't see that code here: http://ptenthusiasts.org/troublecode.html

any suggestions?

2003 GT

[Ant]

Those codes are for the NA PT's not necessarily the GT's.
Anyway doing a search pulled this up:
http://www.ptcruiserlinks.com/forum/...?TOPIC_ID=5834

[BPfromFLA]

Thanks Ant...I'll learn to use the "search". I guess just about everything has already been covered in these forums!!

[CharlieDavidson]

My Scan tool says P0129 is "Low Barometric Pressure". I have this code too and am trying to find out if its the MAP sensor or if there are other sensors involved.

[CREWZIN]

You've attached yourself to a 6 year old thread but I guess it goes along with what you have.

This is from PT Do-It-Yourself.net:

P0129 - Barometric Pressure Out-of-Range low

Description - MAP sensor input voltage out of an acceptable range detected during reading of barometric pressure.

There are 11 possible causes listed in the diagnostic manual. It covers 3 pages of tests to determine the cause. I've replaced several MAP sensors. It's most likely a defect in the sensor. It's something that should be fixed ASAP.