Question about Pioneer DEH-P4000UB CD Player

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I had to change my battery now my Pioneer DEH- P4000UB won't even turn on! I am so confused! I had it installed by Best Buy, I have no idea what to do! Please help! Thanks :-)

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  • 83 Answers

Double check the connections from the battery. There might be some loose wire. Did you change any connections at the back of the Radio?

Posted on Apr 09, 2011

  • kellyfaria64 Apr 09, 2011

    Thanks for the insight, I got my Dad to double check the battery connections but everything is fine on that end. He didn't change anything on the stereo itself.



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The speaker output doesn't work

Hi Marlena,
I had the same problem with the 2200ub, so I will post the solution for that. Hopefully its the same for you, if not sorry I couldn't help better.
I have a 2002 Suburban and was installing the Pioneer DEH-2200UB. The suburban had the factory stereo still and has onStar. So I had everything hooked up, purchased the harness which was perfect except for the blue and white wire on the stereo and a solid blue wire on the factory stereo end. I was confused by there being 2 plugs from the factory stereo and one for the 2200.
I finally went to Best Buy and talked to their tech and he told me that since I have onStar I need to cut the pink wire and wire it to the blue and white wire that goes into the new stereo. These guys were great they didn't hesitate to tell me how to do it and even gave me the extra wire and connectors I would need to do it. Best Buy is expensive but I will keep shopping there just because of their service from these kinds of people.
The pink wire is hooked into the amp which I believe is located under the drivers seat. As soon as I did this everything worked perfectly.
I am not sure if the onStar still works, but I don't plan on using it anyway so if that is important to you, you should probably have a pro do the install. Best Buy will install it for $50 (plus parts) but it could be more for dealing with things like this I really have no idea.
Hope this works for you.

Jan 27, 2011 | Pioneer DEH-P4000UB CD Player

1 Answer

How do i set the clock on the pioneer deh-p4200ub cd player - United States -
It's all in manual above.

Apr 08, 2010 | Pioneer DEH-P4000UB CD Player

2 Answers

Just wondering if Pioneer DEH-P4000UB cd player

no it does not have built in bluetooth but you can get a optional bluetooth kit Pioneer CD-BTB200

Jan 02, 2010 | Pioneer DEH-P8500MP CD Player

1 Answer

How change to europian frequency pioneer

 On many imported cars , the radios have options for different areas of the world (UK/EUROPE : ASIA  : USA+Americas  etc. )
If you have a MENU button  on your radio , see if you can find this Area choice option.
Once found , then it is just a matter of switching to the area required

Dec 08, 2009 | Pioneer DEH-P4000UB CD Player

1 Answer

Need wiring diagram for pioneer deh-p4000ub

Here is the PDF file for your radio. On page 63 is the start of the wiring diagram. I hope this helps. Please Rate this solution

May 20, 2009 | Pioneer DEH-P4000UB CD Player

1 Answer

No sound from speakers

did you check to make sure your vehicle didnt come with a factory amp, if it has one is it turning on? or did you remember to disconnect the negative battery cable while installing your radio, i know thats a dumb question, once i was installing a pioneer a barely crossed a couple wires and fried the radio, the radio itself worked fine and all the features etc, but it never did play sound again. i always disconnect the power now!!

Dec 26, 2008 | Pioneer DEH-P4000UB CD Player

1 Answer

Help please

to set the clock turn off the unit and then hold the multi control thing down and the clock thing will come up.

Sep 02, 2008 | Pioneer DEH-P4000UB CD Player

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