Canon EOS 20D Error Err 01: Communications between the camera and lens is faulty

Model

Canon EOS 20D

Display shows

Communications between the camera and lens is faulty (Err 01)

Type

Error code

Source

Manual p. 153

• Meaning
• Common causes
• What to do
• Still not solved
• Source

What Err 01 means

Communications between the camera and lens is faulty p. 153

Common causes

• Communications between the camera and lens is faulty. p. 153

What to do

1. Clean the lens contacts. (p.9) p. 153

If Err 01 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact Canon service.

This page summarises what the manufacturer’s manual says about Err 01; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Canon. Found a mistake? Report an error.