Check Hybrid System after installing seat covers

If I'm not mistaken, the Gen 3 Prius owners remove the rear seat cushion when they install the seat covers.

Check your owner's manual or Google for instructions on removing the Prius rear seat cushion. Then look for wiring harnesses that may have been damaged or disconnected. A common cause of the Check Hybrid error is an unexpected short circuit to ground. I definitely wouldn't poke around under the rear seat with a wire coat hanger, especially since the HV traction battery and it's associated wiring with 200 or so volts of stored energy resides there.

If you find something disconnected or wiring insulation damaged, repair it if you can. Then know that the Check Hybrid error sometimes takes several attempts to make the car Ready to clear the error condition once everything is OK, maybe up to 10 tries. Good luck!

 

TAKE IT TO THE DEALER, THIS IS A HIGH VOLTAGE VEHICLE AND YOU SHOULD NOT BE POKING AROUND UNDER THE SEAT IF YOU DONT KNOW WHAT YOUR DOING......

 

if the seat bottom installs like the gen 2 they just pop in place with plastic clips towards the front..start near either door and pull straight up then slide it towards the front seat and lift out..you should be able to pop it out BUT the only wires I know of go to the fuel pump (again if its like the gen 2) I don't remember seeing any quick disconnects under the seat..you can read through these posts as well Prius C 2012 - Removing Back seat | PriusChat

.good luck

 

The car checks resistance of the insulation for high- voltage wires that connect battery to the engine...maybe you damaged the insulation on one of the wires there? Thus Hybrid error. Or maybe one of the connectors came off. Need to remove the seat and inspect with good flashlight and maybe rubber gloves and magnifying glass.
Alex

 

IDK where the air intake cooling vent for the battery is on the c but it was on the bottom right rear seat in my 2010 liftback. Did you by chance cover it up? If so, the battery may not be getting adequate cooling which is NOT a good thing!