<p>That occurs sometimes if the cable is not fully plugged in. Try pushing the cable in where it connects to the sensor and the brick.</p>

CC BY-SA 4.0
2023-08-02T02:07:14.090Z
2023-08-02T02:07:14.090Z
Jme
<p>I tried running my EV3 program that requires an infrared sensor, but it didn't work. I looked at the port view on the app and I saw the infrared sensor. It was connected, the brick recognized it but had a &quot;---&quot; on it. I tried restarting it, but nothing seemed to work. Any suggestions?</p>

CC BY-SA 4.0
2020-07-01T15:35:26.387Z
Try a different input port. Try a different cable. Try a different EV3. Try a different sensor.
David Lechner
CC BY-SA 4.0
2020-07-01T18:10:19.883Z
Thank you for the suggestions! I tired a diffrent cable and it worked!
Mr.Espresso
CC BY-SA 4.0
2023-08-14T06:00:36.670Z
Hmm, Nice because your cable is not short-circuited or malfunction anymore.
LKBricks
<ev3>
Infrared Sensor Activation Problems
Mr.Espresso
# Infrared Sensor Activation Problems

(Asked by: username_0 on 2020-07-01)

I tried running my EV3 program that requires an infrared sensor, but it didn't work. I looked at the port view on the app and I saw the infrared sensor. It was connected, the brick recognized it but had a "---" on it. I tried restarting it, but nothing seemed to work. Any suggestions?

**Tags:** ev3

> **Comments:**
> **username_1**: Try a different input port. Try a different cable. Try a different EV3. Try a different sensor.  
> **username_0**: Thank you for the suggestions! I tired a diffrent cable and it worked!  
> **username_2**: Hmm, Nice because your cable is not short-circuited or malfunction anymore.  

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## 1 answers

### Answer by username_3 on 2023-08-02. Score: 0

That occurs sometimes if the cable is not fully plugged in. Try pushing the cable in where it connects to the sensor and the brick.


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