Power Steering went out, replaced Fuse. Stablitrack errors...need help!

guile23

Hello everyone. I have a few questions. Today I lost power steering in my 2008 Pontiac Torrent 3.4l v6. After doing some researched, I learned it was a blown 80amp mega fuse. So I replaced it and so far it's working again.

My questions..
1. What could have caused this fuse to blow/will it blow again (I have not jumped anyones car or jumped mine). Could it be a bad battery?
2. While I was purchasing the fuse I had them check the codes on my car b/c I have had stablitrack and traction control errors on my dash board. I was told I had errors P0405 (egr sensor) and P0300 (misfire). It seems like these two errors maybe linked. Will replacing the EGR valve fix this?

Thanks a ton

guile23

haha anyone?

thecardoc3

A fuse blows because it had to carry more current than it was rated for. Beyond incorrectly jump starting a vehicle which would have the starter drawing current across that fuse because of the cables being connected incorrectly, only some issue with the power steering system (circuit) would cause enough current to flow to fry that fuse. This would not be something that would suggest that you have a battery problem.

The two trouble codes, one for a random misfire and the other for the EGR position sensor voltage being too low (less than .2v) would have nothing to do with each other. Meanwhile anything that affects the PCM's ability to fully control the engine results in the decision to disable the stabilitrack system, so that would be the result of whatever is causing the misfire. All of this would need to be investigated as if each issue was occurring on a different vehicle. Only after the source of the issues were proven would it be possible to attempt to judge if there was any correlation between them.