Question about Canon EOS 400D / Rebel XTi Digital Camera with 18-55mm Lens

4 Answers

Built-in flash does not fire off


I had just bought a new canon rebel xti and when I tried the flash, it does not fire off. The flash will pop up when in auto mode or if you push the flash button, but it just won't 'flash'. The busy flash symbol also comes up before taking a picture , and I noticed that the pictures I take (with the flash popped up) are dark, so the camera is assuming the flash is going off, but it's not. Also, I havent used any external on the camera as of yet.

Posted by on

  • 4 more comments 
  • rd harris Apr 20, 2008

    same here. Bought my wife a new rebel xti and the flash won't fire at all with no errors or any indication why it wont fire.

  • Anonymous Jun 15, 2008

    The link that "solves" this problem doesn't really -- our flashes still pop up but don't flash. That solution is for flashes that don't even pop up.

  • jwsjohn01 Jun 20, 2008

    I have found a few links that describe how to fix the switches that control the deployment of the pop-up flash, but the problem that I haven't seen any solution for is:

    1. Flash will pop-up, but

    2. Flash will not fire

  • arjun_gaudel Aug 11, 2008

    same problem happen with me also . when i try to shoot picture built in flash does not fire.

  • oasd001 Dec 05, 2008

    I have the same problem described here, but on my EOS 40D (4months old). The flash pops up when exposure is too low (in any of the auto modes), but does not fire. Apparently, the camera expects the built-in flash to fire, since the exposure in the picture it takes is too dark.
    This also occurs in P mode. If I pop up the flash manually, it does not fire, although the exposure is obviously calculated with the flash.
    I reset all the custom function settings, turned the camera on/off many times, took battery and CF card out, and still have the same problem. Argh. I am pretty annoyed.

  • JReese Apr 30, 2013

    Just bought my wife a T3i and the flash pops up but doesn't fire, in ANY mode or setting. Tried removing the battery and chip for 20 minutes as some blogger suggested, tried resetting everything, tried holding down the flash as I shot, but nothing worked. I get the BUSY warning on screen, but no error codes. I set the wheel to Auto mode in dim room and the flash pops up to fire, but doesn't flash. Is there ANYTHING I can do outside of sending it in to be fixed? Would updating camera's firmware (It's at 1.04) do any good? TIA


4 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Not really a solution, and about 3 years late :) my EOS400D also developed the same problem (however it was also coincidence that I had just updated to Firmware 1.1.1 (from 1.0.4), but basically the flash would pop up, but wouldn't fire (so not the standard problem with the microswitches), I found with a bit of forum searching that if you hold the flash down to almost clicking it in and then shoot it does actually fire. I am going to see how much it costs to get this fixed and will post what the actual fault is if I can understand the repairman.

Posted on Oct 30, 2010

  • JReese Apr 30, 2013

    Mooland, did you an understandable answer AND how much did the repair cost? TIA

  • Rosa Rose
    Rosa Rose Aug 20, 2013

    Mine is doing the exact same thing. How much did it cost?


The answer is here

i just followed the instructions and got it working. pop off the black metal cover, undo the screws (you may have to take the silver plate off entirely) and allow the black plunger switch free (on the site it suggests there are more than one plunger... my camera only has one on the right side) replace the silver foot, ensuring the plunger goes through the hole, and then pop the black plate back on. should work fine.

Posted on May 09, 2008

I have the same problem with the non-firing flash. My camera shows an error and tells me to turn it off and on again, but it doesn't help. How can we fix this problem?

Posted on Apr 20, 2008

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I've been having the same problem with my old Canon EOS 1000F. I only bought it last year, so obviously it's used. I can't get my head around this problem. It isn't going off in Beginner mode or P mode. As for the other modes, no luck either.

Once when I was at a show of my girlfriends I found that holding down the shutter on P mode so it took two shots, the flash would go off on the second and not the first. Of course, this is not convenient to anyone unless you want to only have half of the photos you could.

Posted on Mar 31, 2008

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

I recently bought a used canon EOS 400d which was

Be aware that the built in flash does not pop up automatically in all picture modes. Try it when in the different modes (on the mode dial) and see what I mean. Does it popo up when manually opened ?, (small button on front left hand side of the viewing pentaprism/flash housing.)

Oct 02, 2009 | Canon EOS 400D / Rebel XTi Digital Camera

2 Answers

The built-in flash on the Canon Rebel XTI won't flash.

i am having the same problom try this i just found this ...

Aug 20, 2009 | Canon EOS 400D / Rebel XTi Digital Camera

1 Answer

I just bought the 430ex II flash and it won't fire on my Rebel XTI.... i read the manual but I'm not sure whats wrong, have any advice?

I assume that flash is turned on. 430ex flash will fire automatically only in AUTO mode. On manual modes you mus manually force the flash to fire.
If flash doesn't fire at all, consider to claim the vendor or let the vendor to check the flash mounted on your camera.

Aug 04, 2009 | Canon EOS 400D / Rebel XTi Digital Camera

1 Answer

EOS Rebel XTi 400D flash not popping up

Flash will automatically pop out only in AUTO mode, if the camera needs some additional lightning. In manual modes, you should use the flash button located at the left down side of the flash compartment, to manually force the flash to pop up

Jul 13, 2009 | Canon EOS 400D / Rebel XTi Digital Camera

1 Answer

Why does the word, ''busy'' pop up on the canon rebel xti?

If the flash fires a full charge(eg. in a dark environment) then this message will appear whilst it recharges. If the message appears all the time and you cannot take a photo there is most likely a problem. Try taking some pictures without the flash card to eliminate that first.

Apr 13, 2009 | Canon EOS 400D / Rebel XTi Digital Camera

2 Answers

I have a canon rebel xti with an 18 to 55 lens .. I recently bought an external flash to sit in the hot shoe .. now when I removed the flash from the hot shoe .. the cameras own flash will not pop up and...

I had the same problem.
Look closely at the hotshoe. Inside it, way over to the side, under one of the tabs on the side, is a tiny metal strip. When you attach an external flash, the strip is pushed down and holds down a tiny button that deactivated the pop-up flash. The strip can get bent so that it doesn't let the button come up even when the external flash is removed.
Very gently take a fingernail or a jeweler's screwdriver and run it underneath the metal strip. I had to do it a couple of times to get mine working again, but it's working great now!

Dec 30, 2008 | Canon EOS 400D / Rebel XTi Digital Camera...

1 Answer

Flash not firing properly

Could be the metering mode you are in. Could be the subject is too far away. Could be ISO is set wrong. Could be the lens aperture can't open up enough. Could be the exposure compensation isn't set correctly. Could be FE Lock is still on and the composition has changed. Does the <flash> icon continue to blink? Then you are too far away.

Sep 12, 2008 | Canon EOS 400D / Rebel XTi Digital Camera

1 Answer

Built-in flash does not work

DO NOT MESS with a new camera (or any other new equipment).
Take/send it back to the vendor, The purchaser has rights also. Number one it must work.
I don't know your location but in UK (& Europe) we have very strict consumer legislation.

Mar 30, 2008 | Canon EOS 400D / Rebel XTi Digital Camera

1 Answer

The flash keeps flashing

hi sneakers
the camera is firing the flash to help it auto focus,the only way to stop it find an area of the picture that has more light/contrast or switch to manual focusing.

Dec 27, 2007 | Canon EOS 400D / Rebel XTi Digital Camera...

3 Answers

How to switch on Auto Flash in Auto mode

Put the camera in "P" and press the flash button above the lens release. If the flash pops, than you probably just have too much light to need it when you are in auto. The flash button is not active in auto so if the xti doesn't want the flash in auto, u can't make it fire. If the flash button does not make the flash pop in "P", search this site for another post about flash not working and u will find that this could be the flash deactivation button in the hot shoe sticking. Not likely though with a new camera unless u have had a speedlite mounted alot.--

I found the answer and fixed my flash. Look on

This will describe how, if you have been using a speedlite alot, than the little tab under the shutter release side of the hot shoe can get bent down thus constantly pressing down (toward the bottom of the camera) the small button which deactivates the pop-up1.gif flash even when the speedlite is not attached. Just bend the tab up a little with a jewler's screwdriver, turn the camera off and on and voila!! Fixed!!! Dan describes pushing the tab down, but on the xti, the tab needs to be bent up to release the flash deactivation switch and fix the problem. Thanks to Dan D on photonet for saving me a service call.

Dec 26, 2007 | Canon EOS 400D / Rebel XTi Digital Camera

Not finding what you are looking for?
Canon EOS 400D / Rebel XTi Digital Camera with 18-55mm Lens Logo

714 people viewed this question

Ask a Question

Usually answered in minutes!

Top Canon Cameras Experts


Level 3 Expert

98768 Answers


Level 2 Expert

164 Answers

old marine
old marine

Level 3 Expert

1571 Answers

Are you a Canon Camera Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides