I just was driving my truck and the engine check light came on. The on-off-on-off-on key "thingy" came up with fault code P0455. I looked in my maintenance manual and I have codes P0454 and then P0460, no P0455.

Anybody no what this code is?

Thanks

 

https://dodgeforum.com/m_555666/tm.htm
entire code list there.

your code

P0455 (M) Evap Leak Monitor Large Leak Detected A large leak has been detected in the evaporative sysem.