How do take the stereo housing off my 52plate honda jazz?

Well the code will be requested when the radio loses power. Like when you change the car battery or pull the radio from the car. My hunch is that the radio is losing power then asking for the code. This power loss could be a fault within the radio, a bad fuse (find the fuse for the radio in one of the fuse blocks and replace it, should be in the manual), or a loose connection on the back of the radio (not likely unless someone has been working under the dash).

Honda Jazz 2008 - Car Review ' Honest John

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Rating: 5 - ‎Review by Honest John - ‎Oct 15, 2015 Oct 15, 2015 - Door lock actuators failed on a 2010 Honda Jazz. Read more ... The2008 Jazz takes everything people loved about the old Jazz. Then takes it ...

Honda Jazz Problems, Reliability, Recalls, Faults and ...

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Auto ExpressI have owned 3 honda jazz from 2002 only one fault on a 2005 model an emission recirculating solenoid failed known ..... 2008-reg Petrol, Owner for 3 to 5 years.

Sounds like the head unit is malfunctioning from how you have described the issue. If so you would need to replace the unit to correct. If it is the same unit that does CD and radio and only part of the features function you will need to replace the faulty unit.

transmission or manual clutch slip and/or poor driving habits need to be looked at if all else is good.

Typically to get the code you have to have the serial number of the unit and call a Honda dealership to get the code. Sometimes in years gone by, there was a credit card sized card that had a sticker with the serial number and code. Sometimes the sticker is even stuck on the owners manual or the inside of the glovebox.

It sound like you are going aftermarket so I would think that the code is not needed as the code was only for the factory radio itself, not the rest of the system (speakers, etc..) Call the radio installer and ask but I don't think you need the code.

1988 Honda Civic Car Stereo Radio Wiring Diagram
Radio Constant 12V+ Wire: White/Blue
Radio Switched Ignition 12V+ Wire: Yellow/Red
Radio Ground Wire: Black
Radio Illumination Dimmer Wire: Red/Black
Radio Antenna Trigger Wire: N/A
Radio Amplifier Turn On Wire: N/A
Front Speaker Size: N/A
Front Speaker Location: N/A
Left Front Speaker Wire (+): Blue/Green
Left Front Speaker Wire (-): Gray/Black
Right Front Speaker Wire (+): Red/Green
Right Front Speaker Wire (-): Brown/Black
Rear Speaker Size: N/A
Rear Speaker Location: N/A
Left Rear Speaker Wire (+): Blue/Yellow
Left Rear Speaker Wire (-): Gray/White
Right Rear Speaker Wire (+): Red/Yellow
Right Rear Speaker Wire (-): Brown/White

Here can find the Stereo Wire Harness OEM Honda Civic 86 87 88 89 90 (car radio wiring installation parts)

Hope help with this.

1996 Honda Accord Car Stereo Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Yellow/White
Car Radio Accessory Switched 12v+ Wire: White/Red
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Red/Black
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: Yellow/White
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 5 1/4′
Car Audio Front Speakers Location: Doors
Left Front Speaker Positive Wire (+): Blue/Green
Left Front Speaker Negative Wire (-): Gray/Black
Right Front Speaker Positive Wire (+): Red/Green
Right Front Speaker Negative Wire (-): Brown/Black
Car Audio Rear Speakers Size: 6 1/2′
Car Audio Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Blue/Yellow
Left Rear Speaker Negative Wire (-): Gray/White
Right Rear Speaker Positive Wire (+): Red/Yellow
Right Rear Speaker Negative Wire (-): Brown/White

no way ...not a fuse ,could simply be the arness wire in back of the radio that is louss,or the amplificator in the radio that is shut ...no way of fixing that ,
have you cheked for muting button or some kind of bluethoot systhem ??

I hqave taken the time to look this up, please take a few seconds rate the solution, thanks.
1995 Honda Civic Car Stereo Radio Wiring Diagram
Car Radio Constant 12V+ Wire: Blue/White
Car Radio Switched 12V+ Wire: Yellow/Red
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Red/Black
Car Radio Dimmer Wire: N/A
Car Radio Power Antenna Trigger Wire: N/A
Car Radio Amplifier Turn On Trigger Wire: N/A
Front Speakers Size: 6 1/2′
Front Speakers Location: Doors
Left Front Speaker Wire (+): Blue/Green
Left Front Speaker Wire (-): Gray/Black
Right Front Speaker Wire (+): Red/Green
Right Front Speaker Wire (-): Brown/Black
Rear Speakers Size: 6 1/2′
Rear Speakers Location: Rear Deck
Left Rear Speaker Wire (+): Blue/Yellow
Left Rear Speaker Wire (-): Gray/White
Right Rear Speaker Wire (+): Red/Yellow
Right Rear Speaker Wire (-): Brown/White

Try the following, this is an 1997 USA Integra

Radio Constant Wire 12V+: Blue/White
Radio Switched Wire 12V+: Yellow/Red
Radio Ground Wire: Black
Radio Illumination Wire: Red/Black
Radio Dimmer Wire: n/a
Radio Antenna Trigger Wire: n/a
Radio Antenna Location: Left Rear
Front Speakers Size and Location: 5 1/4′ Doors
Left Front Speaker Wire (+): Blue/Green
Left Front Speaker Wire (-): Gray/Black
Right Front Speaker Wire (+): Red/Green
Right Front Speaker Wire (-): Brown/Black
Front Speakers Size and Location: 6 1/2′ Side Panels
Left Rear Speaker Wire (+): Blue/Yellow
Left Rear Speaker Wire (-): Gray/White
Right Rear Speaker Wire (+): Red/Yellow
Right Rear Speaker Wire (-): Brown/White
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