Help w/ code PO 301
I can't find any info on Code PO 301. When the code triped the Scanmaster read 999 on the O2 sencor bank 1 and bank 2 was jumping around like normal. Also the short term fuel trim bank 1 read -25 while short term fuel trim bank 2 was normal reading -2 through +1. The car will do this for 10-15 minutes then seems to run fine for a little then do it again. The code never goes away. Any thoughts? Thanks.


