P0A0D Code after battery replacement. Won't go away please help!

welcome! most people miss the last step in the plug. have you looked at the youtube video?

 

If you look closely to service safety plug there is additional small contacts. This contacts are used to inform hv ecu that plug inserted correctly. Please check wires from hv ecu to service safety plug socket. (check small additional pins not HV terminals)

 

Make sure the safety orange plug is properly seated. Then reset the CAN code with an scaner.

 

Just because you can "see" the connection does not mean that it is made. The DTC is telling you that it is not getting the proper input. Check the connection with a voltmeter to verify.

Not seating the safety plug correctly is the number one problem we hear on here.

 

Does anyone knows if this case was resolved?

 

Look at post #9

 

Yeah, That did not fix it for me, So far traced it to a broken connection between the main disconnect (the interlock) at the battery and the Hybrid Vehicle Control ECU. I was hoping someone else had the solution but In the process of trying to find the problem i noticed traces of squirrels, So i am pretty sure its a wire somewhere in between.

 

SO, i feel like i need to share this. I feel i have found my problem, There is a plug a the back of the car by the battery fan that had corrosion in it, I disconnected it cleaned most of the corrosion, added some dielectric grease and reconnected it, Now the car magically works as expected. It has been 2 days and is still working, I do not know what exactly goes through that connector yet (Big plug 4 wires) If anything changes i will share but as of now its fixed!.
i just wonder why is it corroded...
I share this just in case someone else find themselves with this problem, Hope it helps someone!
2005 Prius

 

congrats and thank you! corrosion is prius middle name.

 

Oh thank you great one! This image has saved me so much coin I must worship the ground you walk on. The car will not start unless the “bale” is closed AND slid into the locked position!

The hybrid battery replacement vultures were circling. My OBD app does not show P0A0D on my 2010 Prius. I downloaded Dr. Prius on iOS which did.

 

Wanted to post up the cause of the corrosion, right where the lift supports are mounted to the body of the car get flexed over the years, and end up cracking the factory seam sealer. Water travels through the cracks, into the body, and drips onto this perfectly placed connector. The fix? Clean up the channel with some soapy water, remove the lift support, and get yourself some 3M Drip Check Sealer. Goodluck!

 

Can I please get some help with my 2014 Prius v ? It’s not going into ready mode and I’m getting poaod code I tried the safety plug but that don’t seem to be the issue. Any idea?

 

The P0A0D code indicates an open somewhere in the safety interlock circuit, which includes the small side contacts on that safety plug, and also includes some contacts under covers on the inverter under the hood. It's a simple circuit, runs from a pin of the power management control ECU, through all of those contacts, to body ground. So when all of the safeties are properly in place, that ECU pin is grounded; if it isn't, you get the code.

Naturally, an open anywhere in that circuit will give you the code; it doesn't have to just be one of the places the cover or plug safety contacts are. A break anywhere in the wire connecting them would have the same effect.

To get to the safety plug contacts, the circuit also passes through a wire harness connector that someone probably disconnected while swapping the battery. Did that get reconnected?

If it isn't that, a person just takes an ohmmeter and starts tracing the circuit, finds the spot where it conducts to ground from one side of the spot but not from just past it, and then fixes that problem, whatever it turns out to be.

 

Thanks for the help it most likely is a damaged wire because I checked all the connections and they are good. Is there any possibility that I missed a fuse or relay they might’ve gotten damaged I checked the one in the fuse box but I was told there is a 125 or 140 amp fuse link but I just don’t know where to look for it

 

There are no fuses or relays in the safety interlock circuit. It is exactly as I described in post #18, so a simple ohmmeter is enough for troubleshooting. The wiring diagram helps for knowing where the wires go.

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