Question about Pioneer DEH-1900MP CD Player
The unit will not allow me to play or eject a cd the message error AO is displayed on the display
its says error-Ao
I had the same issue, my battery was died due to headlight was ON and later player was showing AO. I am going to reset the unit and see if it will solve my problem.
Posted on Aug 24, 2008
Same problem. Battery went dead and I received the error AO message when I tried to play a CD. A Circuit City installer pulled my deck with the extraction keys and grounded out the deck by applying one of the wires to the small indentation on top of the deck. That reset the theft prevention on the CD player and I was happy until my battery went dead again. :(
Posted on Nov 24, 2009
Okay. i have had the same problem before. along with that problem, if i push buttons while in another mode, ie. fm/am radio, it's like the buttons on the deck were re-mapped or one button does a different action than it should. now, i found that when i connected the radio, i had the faceplate on, with the battery terminals still connected. this apparently sends a surge or something to that effect through the radio, causing the cd player to not work, the buttons re-mapping and so on. in order to reset itself, you have to unplug the harness from the back. take the face plate off, then wait about 30 minutes just to be sure that all "left over" power is released. after all that, just plug the harness back in, with out the face plate attached, then put the faceplate on. it should work. after the first time it happened to me, i did everything to replicate the problem, then found out about the faceplate causing it. trust me, try it out and it'll work everytime.
Posted on May 07, 2008
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Posted on Jan 02, 2017
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