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Hi, I have a 2019 STI with a Cobb redline intake and INVIDIA R400, it has 3k kilometers and today started the car got a check engine through cobb ap troubleshoot it showed its the rear o2 sensor, I restarted the ECU and it went away.
should I be worried or is this just a bug/glitch?
 

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Hi, I have a 2019 STI with a Cobb redline intake and INVIDIA R400, it has 3k kilometers and today started the car got a check engine through cobb ap troubleshoot it showed its the rear o2 sensor, I restarted the ECU and it went away.
should I be worried or is this just a bug/glitch?
Check to make sure sensor is not loose. If the heater in the sensor is going bad it could cause it.
 
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