Question about Kenwood KDC-MP232 CD Player

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Security i bought a car and it has the Kenwood KDC-MP232 in it all of a sudden it's flashing protect but i don't have the manual or the code. I had it for three months and no problems with it until today. How can i get it back working.

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Re: Security

"Protect" isn't for security on a Kenwood; it's caused by a problem with the speaker output. There may be a defect in the CD player, or you may have a blown speaker or a shorted speaker wire in the vehicle. Try disconnecting all the speakers and see if the unit still shows "protect" when you turn it on. If it still shows the "protect" message with no speakers connected, the unit needs to be serviced; if not, re-connect the speakers one at a time until you find out which one is causing the problem.

Posted on Aug 10, 2007

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Re: Security

I had "protect" flashing on my kenwood KDC-MP232 also. I fixed the speaker wire problem but I couldn't get the "protect" message to reset. I had to remove the unit from the dash and unplug the power supply. I plug it right back in and it was back to normal.

Posted on Dec 12, 2007

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My kenwood cd player is flashing protect ive tryed the wiring and it still dose it is there a code i need

the output ic inside of the deck is probably bad. unless you are good a desoldering and soldering it will need to be repaired by a professional.

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Mar 18, 2010 | Kenwood KDC-MP232 CD Player

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Im buy a new car tree months ago im replace the batery nd now my radio says protect!!! its a kenwood kdc-mp232 what i got do?

enter the code you got when you bought the radio. you would have entered it the first time you installed it.

Sep 05, 2009 | Kenwood Car Audio Receivers

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I Forgot code to my KENWOOD MP232 Car Stereo

i have the same radio the stock code on mine is 0000 try that ive also seen kenwood use 1234 or variants of it unhook the battery for a few mins and rehook it up it should reset the code to stock.

Jul 09, 2009 | Kenwood KDC-MP232 CD Player

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I have the code for my KDC-MP232 but it will not take it i know that it is the right one but i do not know what to push after i haveput the code in can you help?

Common Kenwood Security Codes
Many Kenwood radios are configured with the same security codes:

KCAR - This seems to be a "backdoor" to some Kenwood models.
3051 - This is the security code which is printed in the manual of many Kenwood models.
1234 - This is a security code commonly chosen by Kenwood owners.
Entering Your Kenwood Security Code
If the car battery fails or is disconnected, the Kenwood will ask for the security code.

The procedure to enter your security code differs on various models of Kenwood car stereos. Here are three of the more common procedures:

Type 1
During the code request mode, while holding the DISP key depressed, press and hold the Volume UP or DOWN key for 3 seconds until the "..." display disappears.
Enter the security code using your Kenwood remote.
Type 2
Press the "Auto" button and "Track up" on the face of radio at the same time until the four dash lines disappear.
Enter the security code using your Kenwood remote.
Type 3: Model# DPX-4020 and DPX-4030
Press and hold the 1 then the 6 preset keys until the display shows the letter 'C'.
Enter the security code using your Kenwood remote.
Entering Letters on your Kenwood Remote
To enter a letter using your Kenwood remote, press a button once for the first letter, twice for the second letter, and three times for the third letter -- then press the Track Up or Next Track key to send the letter.

To send the letter 'A', press the 2 key once and then press the Track Up key. To send the letter 'B', press the 2 key twice and then press the Track up key.

Finally, when you are done entering all of the letters, press and hold the Track Up button for 3 seconds.

The key sequence to enter the security code KCAR is:

Track Up
Track Up
Track Up
Track Up
Your Kenwood should then enter tuner mode.

A Security Code Bug in some Kenwoods
There is a reported bug in the security code handling of some Kenwood stereos. In models with thie bug, the security code is stored incorrectly. The workaround is to enter the wrong security code.

In models with this bug, you have to decrement the third character of the security code by one. If your security code was 1111, you would enter your security code as 1101. If your security code was 9999, you would enter 9989.

Jun 29, 2009 | Kenwood KDC-MP232 CD Player

1 Answer

Protect is flashing on the radio

wires are ok but speakers may not be which can put it into protect.other then that your head unit has an issue

Jun 12, 2009 | Kenwood KDC-MP232 CD Player

2 Answers

My Kenwood KDC-MP232 entered "protect" mode, & I do't know why

This unit has an anti-theft program that is activated when a code is programed.

At this point forward, the power circuit is monitored, thus when the power is disconnected or drops below 12VDC it shuts down and the code must be entered to reactivate the unit and its functions.

Other circumstances that might trigger the anti-theft shut down are...

Bad power or ground connection to head unit.
A weak or faulty battery/alternator.
A blown fuse.
A sudden power surge, as happens when jump starting another car.

As for your personal 4 digit code, I cant help you with that but some high-end car audio dealers offer a diagnostic service that can reset a coded/locked out unit.

Good luck

Mar 23, 2009 | Kenwood KDC-MP232 CD Player

1 Answer

On display is says "protect" what does that mean?

Try disconnecting the power supply to the back of the mp232 then reconnecting it. This worked for me AFTER doublechecking all of my speaker connections.

Mar 22, 2009 | Kenwood KDC-MP232 CD Player

1 Answer


please i dont remember my 4 digit and i cantnot use my kenwood kdc-mp232 please send me a 4 digit

May 01, 2008 | Kenwood KDC-MP232 CD Player

1 Answer

Demo mode problem

From the user's manual (pg.23): 1. Select the Demonstration Mode. Push the Control knob towards [FM] or [AM]. Select the "DEMO" display. 2. Set the Demonstration Mode. Press the Control knob for at least 2 seconds.

Feb 13, 2007 | Kenwood KDC-MP232 CD Player

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