Sensor Cleaning Error
Canon Camera
Severity: ModerateWhat Does This Error Mean?
This error means the automatic sensor cleaning mechanism failed. The ultrasonic vibration system that shakes dust off the sensor could not complete its cycle. Try running the cleaning again from the menu. If it fails repeatedly, the cleaning unit may need service.
Affected Models
- Canon EOS Rebel series
- Canon EOS 5D
- Canon EOS 6D
- Canon EOS R series
- Canon EOS 90D
- All Canon cameras with sensor cleaning
Common Causes
- Sensor cleaning mechanism stuck or jammed
- Low battery — not enough power to run the cleaning cycle
- Sensor filter coating damaged
- Internal dust on the cleaning mechanism itself
- Camera orientation affecting the cleaning mechanism
How to Fix It
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Make sure the battery is fully charged, then run Clean Now again.
Menu > Setup > Sensor cleaning > Clean now. The cleaning cycle needs adequate battery power.
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Hold the camera face-down during cleaning.
Gravity helps dislodged dust fall away from the sensor. Point the lens mount downward while running the cleaning cycle.
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Disable automatic sensor cleaning at startup/shutdown if it causes delays.
Menu > Setup > Sensor cleaning > Auto cleaning > Disable. You can still run manual cleaning when needed.
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If dust persists, use a manual sensor cleaning kit.
Sensor swabs and cleaning fluid can remove stubborn dust. Be very careful — the sensor is delicate.
Frequently Asked Questions
How does Canon's sensor cleaning work?
Canon uses an ultrasonic vibration system on the sensor's low-pass filter. The filter vibrates at high frequency to shake off dust particles, which fall onto a sticky strip below.
Should I clean the sensor myself?
Minor dust can be removed with a rocket blower (no contact). For stubborn spots, sensor swabs work but require care. If you are not confident, have a camera shop do a professional sensor cleaning ($50-$75).