If this is an Accord with rear drum (did they still make those in 05?) replace the cylinder. If it doesn't push in easily it is frozen and will never work again.
Otherwise:
Unmount the caliper and remove the pads.
Disconnect the parking brake cable from the caliper parking brake lever.
Use a purpose built tool (preferably not the cube shaped thing) to rotate the piston clockwise as it pushes the piston inward.
Verify that the notch in the piston aligns with the teat of the brake pad. If not, rotate the piston counterclockwise until the notch is positioned to positively engage with the teat.
You need to rotate the piston counter clockwise.
its the brake resivior
If the Master Cylinder is defective then replace it.
DOT3 Look on the top of the master cylinder cap.
I assume you could not compress the caliber, The caliber on the Accord must be turned while being compressed, There is a special tool for this. Some Auto Parts stores will lend you the tool if you purchase the pads from them. Answer: When buying ammunition, be sure and specify the proper caliber. When buying brake parts for your Honda Accord, you'll need to compress the caliper, not the caliber.
Check brake fluid level in master cylinder Make sure parking brake is fully released
No
the pedal will slowly depress with no loss of fluid
DOT 3. Listed on the top of the master cylinder cap.
where do I add brake fluid to my Honda accord 92
Normally it means the brake master cylinder is low of fluid. But it can indicate another problem.
In the Master Cylinder mounted on driver's side near firewall.