2013 PRIUS C2 LOW OIL PRESSURE, NO START

Hello newbie here, I was wondering if any of you have had this issue my (commuter) car has 109,000 and I do all the maintenance.
So I got home from work and an hour later I went to start the car and got a warning light with the message OIL PRESSURE LOW and would not start (No Ready Light).I did some searching on here but could not find a fix or something related to my problem to troubleshoot but so far I've done the following;
Oil level checked - Good (Use 0-20 synthetic)
Battery check - 12.8 Volts (multi-meter)
Disconnected battery (negative cable) to reset ECU.
Checked all fuses.
Tried to pull codes with OBD II reader but would not connect to ECU.
Took off the OIL Pressure Sending Unit (Sensor) and tested good.

I'm not sure what else to check before I decide to take it in to the dealership for a diagnostics.
Is there a procedure on resetting the ECU or pulling codes on these units?
Any feedback would be greatly appreciated.

Thank you in advanced.

Demoe

 

[QUOTE="ETC(SS), post: 2429589, member: 69520"

12.8 seems a little low.
I'd take a second look at the battery, then try to figure out why the ODBII won't talk to the ECU.



Good Luck![/QUOTE]
I just tried jumping it running 13.5 volts with no changes

 

There are several ecm fuses which are all good but the code just will not go away after resetting by removing the positive cable.

 

Here's what it shows.

 

I agree with you Mendel. I'll take it in and have it diagnosed cause I've tried just about everything and the fact that I can't link to the ecm with my obd worries me.

 

Not sure, are these (am1 & obd) fuses in the same fuse box located under the dash.

 

I just looked at the fuse box under the dash and yes am1 and obd fuses are good, I had previously checked those.

Thanks.

 

I have a service appointment on Tuesday so I should have something to report back by Wednesday.

 

Well, I got the car back from the dealership (no charge) and as it turns out I had a blown fuse. I know I must of checked that fuse at least twice so I'm just confused at this point. Anyways the fuse they claim was blown out is # 12 in the engine compartment so I thought I post a pic so if anyone else ever has this problem they know where to look first.
Thank you all for the help.
Demoe

 

That's exactly what I used and got a beep on all fuses including the IG2 in addition to that a visual inspection was also performed just to make sure and it just does not make sense to me well at least I didn't have to pay the diagnostics charge.

No problem.