My All keywords are suddenly down or lost

Hello All,
My Website URL is "bdsautocare.com.au". On 17th October 2016, my all keywords are lost or you can say disappear. I don't think it's affected by Penguin 4.0 because I checked in Google Web Master Tool's Message, Security Issues and also checked in Manual Action, I don't find anything wrong in my Web Master console. I attached my console Images also.
I don't know what is the actual problem in it.
My lot many keywords were at top position on Sunday, I don't know what happened on Monday my few keywords lost its actual position and few were disappear.
Now Please help me to get out of this problem and suggest me such solution.

 

According to Ahrefs, you have more than 7k backlinks?

Review these links and make sure they are not spam links.

 

Hello Hussain,
I checked that. I don't find any spam link.

 

Audit your website and ensure your website is well optimized, there is no major error exist.

Also please check the quality of your back links as recently penguin update rolled out.

 

How long have you enjoyed good rankings?
What did you do in the past 15-30 days with your site?
Any guest posting etc?

 

last Saturday My all keywords are at good position. and then I checked on Monday and its gone.
I didn't do any guest posting. but just one day before means on Friday I submitted few social bookmarking links for my site.

 

How long have you held a good position in the search rankings?

Wait for a couple of days as it could be just fluctuation.

If this continues then analyse the sites where you have created your links (social bookmarks).

 

I Hope it's Flux and nothing more than that. since last three months, all the keywords were on a good position. I don't know what's going on because all the keywords are down and they all were from different URL.
First I thought it may be a penguin 4.0 hit, but I checked that also and didn't find anything wrong with it.

 

If your keywords are suddenly down that it might possible that your site affected the google penguin update because you might be getting back links from poor domain authority sites.