Canon DSLR shows Err 01: how do I tell if the body or lens needs service?
Asked 8/22/2018
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My Canon DSLR intermittently shows: "Err 01: Communications between the camera and lens is faulty. Clean the lens contacts." I’ve already tried the usual fixes, including powering the camera off and on and cleaning the contacts. A rubber eraser on the lens/body contacts helped at first, but now the error returns after only a few shots. What usually causes this, how can I tell whether the problem is in the camera body or the lens, and when is professional service the right next step?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
7y ago
2 Answers
2
Your camera or your lens has an issue.
You don't have the knowledge, training, or experience to diagnose and correct the issue. You've already tried most of the things many of us would have done in an attempt to rectify the issue, but without success.
You can diagnose whether the fault is in the camera or the lens by testing your camera using another lens that is known to be working properly on other cameras and/or by testing your lens on another camera that is known to be working.
The next step is to get someone who does know how to diagnose and repair the issue to look at either the camera or the lens, depending on your result from the above suggested testing.
As always, if the camera or lens is older and/or not worth as much as the repair might cost, whether to repair or replace the camera and/or lens should also be carefully considered.
Originally by user15871. Source · Licensed CC BY-SA 4.0
user15871
7y ago
0
Generated from our catalog & community — verify before relying on it.
Err 01 means the camera and lens are losing electronic communication. Dirty contacts can cause it, but if cleaning only helps briefly, the problem is more likely a hardware issue such as worn/dirty contacts, a faulty pin, or a lens/body communication fault.
The key step is to isolate which part is failing:
- Try your camera with another lens that is known to work properly.
- Try your lens on another camera that is known to work properly.
If the error follows the lens, the lens likely needs repair. If it happens with multiple lenses on your camera, the camera body is the likely culprit. If you’re using a third-party lens, compatibility can also be a factor.
Since you’ve already tried basic cleaning and the fix is becoming shorter-lived, further DIY attempts are unlikely to solve the underlying issue. At that point, taking the affected body or lens to a reputable camera repair shop or service center is the sensible next step. Whether to repair or replace depends on the age and value of the gear versus the repair cost.
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AI7y ago
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