25 Aug, 2025
"Hi, I have a LiftMaster automatic gate. It’s showing an error code 57, which indicates something’s obstructing the photo eye sensor. However, there’s nothing actually in the way. We’ve had a couple of technicians come out who said it could either be an issue with the photo eye sensor or the impact sensor, but they never returned to fix it. I need someone to come out and take a look and fix it."
Answerd by:
Miami, FL
It sounds like you're dealing with an error code 57 from your LiftMaster automatic gate, which typically refers to an issue with the photo eye sensor or impact sensor. While the error message indicates obstruction, sometimes the real problem can be internal, such as a misalignment or a malfunction of one of these sensors.
Let’s break down what’s going on and how to fix it.
1. What Is Error Code 57?
Error Code 57 often points to an issue with the photo eye sensor, which is a safety mechanism that detects objects in the gate’s path. If something blocks the sensor, the gate won’t close.
However, in your case, since you’ve already checked and confirmed there’s no obstruction, it could be:
- Misalignment of the photo eye sensor: The sensor could have shifted, causing it to "think" there’s an obstruction when there isn’t.
- Faulty sensor or wiring: Sometimes the sensor itself might malfunction, or there could be an issue with the wiring leading to the sensor.
- Impact sensor malfunction: This could be related to the sensor detecting forces it shouldn’t, potentially stopping the gate from closing.
2. What’s the Fix?
- Sensor realignment: The technician may need to adjust the position of the photo eye sensor. This is often a simple fix.
- Sensor replacement: If the sensor is defective, it will need replacing.
- Wiring check: The technician will inspect the wiring between the sensor and the opener to ensure it’s functioning properly.
- Test the gate: After adjustments or repairs, the technician will run the gate through several cycles to ensure it operates smoothly.
3. How Long Does the Repair Take?
Repairs like this are typically quick, often completed in 1-2 hours. However, if the issue is with the sensor wiring or if the sensor needs to be replaced, Automatic Gate Repair might take a bit longer.
4. Will the Gate Be Safe to Use Until It’s Fixed?
It’s important not to use the gate if the error code is preventing it from closing properly, as leaving it in an open or halfway position can be a security concern. It’s best to avoid using the gate until the issue is resolved.
5. What’s the Next Step?
Since you’ve already had a couple of technicians come out without resolving the issue, it’s good to have a thorough inspection done by an expert. You’ve already scheduled a visit, which is perfect!
Repair Process
- Diagnosis: The technician will assess the photo eye sensor and impact sensor to pinpoint the issue.
- Adjustment/Replacement: If necessary, they’ll realign the sensors or replace faulty parts.
- Testing: The technician will test the gate to ensure the sensors are working properly, and the gate opens and closes without issue.
Pro Tip for Homeowners
Keep an eye on your gate sensors. If you start seeing any issues like error codes or malfunctioning sensors, get them checked right away. Minor sensor misalignments can often be fixed quickly, preventing larger issues down the road.
About Gate Sensors and Error Codes
Check for any obstructions around the sensors, then call a technician to inspect and diagnose the issue.
If the sensor is misaligned, it’s a simple fix you can do yourself. However, if there’s a wiring or sensor malfunction, it’s best to call a professional.
Repair costs generally range from $100–$300, depending on the extent of the issue (realignment vs. replacement).
Regularly clean the sensors to prevent dirt or debris from obstructing their path.
It’s recommended to avoid using the gate if the sensors aren’t working properly, as it could be unsafe or lead to further damage.
Ready to get your LiftMaster gate back in working order? Schedule a Free Estimate today, and our technician will quickly assess and resolve the issue.
