Canon EOS 20D Error Codes: List of 5 Codes and Their Meaning

This is the list of error codes the Canon manual gives for the EOS 20D Canon EOS 20D. Find your code below and open it for what the manual says about its causes and what to do.

Error codes from p. 153

Code	What it means	Page
`Err 01`	Communications between the camera and lens is faulty	p. 153
`Err 02`	There is a problem with the CF card	p. 153
`Err 04`	The memory card is full	p. 153
`Err 05`	Something obstructed the built-in flash's automatic pop-up operation	p. 153
`Err 99`	An error other than the above has occurred	p. 153

Codes and descriptions are taken from the manufacturer’s manual; page numbers link to the PDF. ManualLib is not affiliated with Canon. Found a mistake? Report an error.