ERR 30
Canon DSLR Camera
Severity: CriticalWhat Does This Error Mean?
ERR 30 means the shutter mechanism has malfunctioned. The shutter could not complete its opening and closing cycle. This is a serious mechanical error — the shutter may be nearing end of life or may have a physical obstruction.
Affected Models
- Canon EOS Rebel series
- Canon EOS 5D
- Canon EOS 6D
- Canon EOS 7D
- Canon EOS 90D
- Most Canon DSLRs
Common Causes
- Shutter blades worn out after reaching their rated lifespan
- Shutter blade stuck due to lubrication failure
- Physical damage to shutter mechanism from impact
- Shutter motor failure
- Debris interfering with shutter movement
How to Fix It
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Turn the camera off and on — sometimes the shutter resets.
A temporary shutter jam can sometimes clear with a power cycle. If ERR 30 returns on the next shot, the problem is persistent.
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Remove the lens and gently inspect the shutter curtain.
With the lens off, look inside the mirror box. Do NOT touch the shutter curtain — it is extremely delicate.
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Check your shutter count to see if it is near the rated lifespan.
Use a tool like ShutterCount or check EXIF data. Entry-level DSLRs are rated for ~100,000 actuations. Pro bodies for 300,000+.
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The shutter needs professional replacement.
Shutter replacement is a common repair. Cost is typically $200-$400 including labour.
Frequently Asked Questions
How long does a Canon shutter last?
Canon rates their shutters at 100,000 actuations (Rebel/xxxD), 150,000 (xxD), or 300,000+ (5D, 1DX). Many shutters last well beyond their rating, but some fail earlier.
Is it worth repairing vs buying a new camera?
Depends on the camera model. A $300 shutter repair on a $2,000 body makes sense. On an entry-level body worth $400, you might consider a replacement instead.