1111 is the correct code !
That model can be connected to bluetooth devices.
pioneer deh-p43 wireing diegram
To get audio working on the Pioneer DEH-6250BT during a call, ensure that your phone is properly paired with the car stereo via Bluetooth. During the call, check that the audio output is set to the Pioneer unit; you may need to select it as the audio source on your phone. Additionally, make sure the volume on both the stereo and your phone is turned up. If issues persist, try disconnecting and reconnecting the Bluetooth connection or restarting both devices.
how do you set your clock on a pioneer deh-1900mp car radio
A wiring diagram is a diagram showing how to wire certain electrical components, in this case it would be the Pioneer DEH-4400.
CIRCUIT
The joint star
you press the settings tab
color diagram 4 speakers
Radio unlock codes are different for every radio. Call the dealer with the serial number from your radio and they can give you the code.
try this link
Check the fuse.