I have a 2019 charger r/t 5.7L. I'm getting no communication over the OBD II port and I have a flashing/blinking fuel light. I have replaced the in tank fuel pump which is working (the car drives normally), its creating pressure and the float gauge works properly (varying resistance with float position), yet the fuel gauge on the instrument panel reads incorrectly. Any help would be appreciated. Thanks!

 

Are you using a scan tool that's worked on your car before? If not, since it's a 2019 your car likely has the Secure Gateway Module (SGM) which will either require a bypass cable or a scan tool that has a current subscription to AutoAuth.

-Rod

 

Thanks for your help Rod, that may be the problem. I'll check into that.

 

Thanks Rod, yes that was it!

 

I'm glad to hear you figured out the issue. Thank you for following up with what you found.

-Rod