Pioneer Model: DEH-P8400BH

It's possible that the head unit's USB port or the wireless phone charger is no longer functioning properly. You can try the following to troubleshoot the issue:

1. Disconnect the wireless phone charger and test the USB port by connecting a different device. If the other device doesn't charge, the USB port may be faulty.
2. If the USB port is working, try a different wireless phone charger. If it still doesn't work, the issue could be with the wireless phone charger.
3. Check the car's fuse box for a blown fuse related to the head unit.
4. If all else fails, contact Pioneer or a professional car audio installer for further assistance.

Verify that your phone's mic is working when attached to a bluetooth device (other than the stereo). This is to verify that it is the stereo and not your phone. If it passes you may want to try deleting the numbers in the stereo's bluetooth memory and then pair your phone to the stereo. I believe your stereo only holds three numbers.

Hello Lon Delaney,

I'm not actually seeing a question here... Nor make/model/year...

but I can easily deduce you are in wonderment how to meld these many wires... with your existing world (I suspect).

if you do NOT own your own drawings... (which I strongly recommend to anyone who is going to keep a vehicle for a while)... you can (highly likely) access some quite EXGUISITE drawings at BBB Industries web site. EULA (end user licensing agreements) need be settled (as with everything technical in todays world)... but their technical drawings & service bulletins are very well worth the exposure...

For your own sake... and any subsequent VEHICLE owners/users (or repair folks)... I would STRONGLY recommend you use
factory connector plugs and fully mimic your existing wiring where possible...

The AFTER MARKET APPLIANCE manufactures... support some makes...but (car manufacturers are deliberately EMBEDDING proprietary wiring into increasingly complex systems)...

Crutchfield supports it all...

Avail yourself of their expertise & custom equipment...
They were the ones that honestly told me my LINCOLN Navigator was a pretty ugly system... but I could indeed get a 3SIXTY3 unit to accomplish what I was after.

Good luck with yours.

See Crutchfield right here (below)...

Pioneer DEH P8400BH

BBB Industries Premium Alternators Starters Power Steering Products

http://www.manualslib.com/products/Pioneer-Deh-P8400bh-105241.html

you can try disconnection the power to the radio for 5 minutes (all the power not just the main power) then reconnect it and see it it reset.

In the manual Error 23 states the USB stick is not formatted with the FAT16 or FAT32 filesystem, which is the only supported filesystems supported on the unit.

I've found that I need to have my phone on with Bluetooth enabled before the head unit powers on (i.e.starting the car). If it's already started I just pop the faceplate and snap it back in to power cycle the head unit. At that point Bluetooth always connects properly.

Turn the bluetooth on in ur phone.

Use MULTI-CONTROL to select
Connection open in the function menu.

Press MULTI-CONTROL to open the connection.

Always waiting is displayed. This unit is now
on standby for connection from Bluetooth
device(ur phone).
If your Bluetooth is set ready for
Bluetooth wireless connection, connection to
this unit will be automatically established.

with a blackberry you have to go to the media player, go to music for music and then hit options receive using bluetooth