Question about Pioneer DEH-P80MP CD Player

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ACC line error

This does not happen when i crank my radio all the way up on the radio. but when i put it a CD and try to crank the volume i get to right about 42-44 and then it says ACC line error... does any1 know what i have to do to fix this? or if i culdve installed soemthing wrong

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  • Anonymous Apr 26, 2008

    I have the same problem with my deh-p80mp. Somekind power source problem maybe?

  • mcmikeyb Apr 26, 2008

    I have the same issue as well. It used to work absolutely fine in my old Astra, but now I've put it in my BMW 318i it complains when I run it anywhere past 40 on the volume. I'm running it in 60W mode and I'm thinking it's one of two things - the in-car speakers can't handle it or it's trying to draw more power from the ACC line than is possible. I removed the extra cable saying 'When using this unit at 60W setting, connect ONLY to ACC line of 10A or more.' Any ideas?!

  • g_haughton81 May 06, 2009

    i cant turn up my music while playing a cd the error in acc line always comes up so i cant use no options

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Your stereo is trying to pull more juice then your electrical system wants to dedicate to the accessory line. Thats why Pioneer provides a secondary source wire that is attached to the inline fuse. Mkae sure that the fuse is no more than 10A as the larger fuse will provide too much resistance. Another problem that could be happening is that many auto manufacturers(foreign especially) have gone with lower voltage wiring harnesses. Use a multi-meter and make sure that you are getting a minimum of 12-14volts constant with key in the on position. If voltage is reading 9-10 volts which is common in some model cars, you may have to upgrade your system or just live with 3/4 volume. Good luck guys.

Posted on Jul 04, 2008

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Posted on Jan 02, 2017

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1 Answer

My key is stuck in the ignition.


Your car has several different ignition positions. They each offer slightly different functionality.
Off: In this position, the engine is off, and so are your electronic accessories (unless the delay has not expired yet). You can still turn on lights (headlights, interior lights, etc.).
ACC: This is the accessory position. Turn the key to ACC if you want to listen to the radio, play a CD or use other accessories without cranking the engine.
On: In this position, all of the electronics should come on. This is also the position that the key will return to after cranking the engine.
Start: Turn the key to this position to crank the engine. Let go of the key when the engine is running and the key will return to the on position.

http://www.aa1car.com/library/ignition_switch_positions.jpg

I use to own a car that had an ignition that was ACC - OFF - ON - START.

Try turning your ignition one position clockwise and see if the radio turns off and the key comes out.

https://hackadaycom.files.wordpress.com/2008/08/ignition.jpg?w=450&h=338

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HI,I INSTALLED MY DEH-6500 PIONEER RADIO,CAME ON DEMO MODE,PUT CD IN VOLUME WORKS BUT CANT CHANGE SONG ON CD,TOOK CD OUT,BACK TO DEMO MODE WHERE I CANT DO ANYTHING,CAN YOU HELP GET ME OUT OF DEMO MODE...


Feature demo
The feature demo automatically starts when
power to this product is switched off while the
ignition switch is set to ACC or ON. Pressing 6
numbered button during feature demo operation
cancels the feature demo mode. Pressing 6
numbered button again to start the feature
mode. remember that if the feature demo continues
operating when the car engine is
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Check to see if the selector switch in rear of unit is switched to 60. if that is the case, then your speakers are not capable of handling the power. This is a safeguard Pioneer has built in to the unit. It senses the wattage allowances and self adjusts to the allowed wattage of the speakers. If this is the case, then you need to upgrade your speakers.

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