Error code P00B4 radiator coolant temperature sensor circuit high.

[Cyborg65]

I have a 2018 sonic RS with a 1.8L auto. A few months back I took my car in to the dealer for an oil change, it had just passed the warranty of 50,000 miles, but when I left the check engine light was on. I took it right back and they said it was on when the car came in, but it was not. My oil life monitor was down to 2% so I was watching my dash the whole way to the shop specifically for warning lights so I didnt damage anything. They brought the car back in and said it was a engine coolant temperature sensor, so I replaced it. Check engine light is still on. I hooked up a scan tool and get the error code "P00B4 radiator coolant temperature sensor circuit high". Has anyone else had this issue and what did you do to fix it?

 

[chris.wojciechowski@gmail]

I have a 2018 sonic RS with a 1.8L auto. A few months back I took my car in to the dealer for an oil change, it had just passed the warranty of 50,000 miles, but when I left the check engine light was on. I took it right back and they said it was on when the car came in, but it was not. My oil life monitor was down to 2% so I was watching my dash the whole way to the shop specifically for warning lights so I didnt damage anything. They brought the car back in and said it was a engine coolant temperature sensor, so I replaced it. Check engine light is still on. I hooked up a scan tool and get the error code "P00B4 radiator coolant temperature sensor circuit high". Has anyone else had this issue and what did you do to fix it?

Hi there, I know this is an old thread, but did you manage to fix the issue? I have the same problem as of yesterday in my 1.8L 2016 Sonic.
Thanks in advance,

Chris