Rep Power: 0

I am trying to find out why I’m getting a U0155 code. My battery light is on as well as my engine light and I almost feel as if they’re related. The battery light doesn’t come on until the car starts and cycles through its startup procedure. I can’t reset my oil life due to no communication between the cluster.

Things I’ve tried to eliminate the battery light:
- New Battery Voltage Sensor
- New Battery
- Cleaned connections

Car is a 2015 Civic SI. Any suggestions?

 
Rep Power: 125

Sounds like either a bad cluster or PCM that isn't communicating with the other modules. That's what the code means anyway. Since you've cleaned some connections, you'll either have to dig further or get it professionally looked at.

I'd bet money on the PCM, but confirm before buying anything.