EPC and Ck engine lights on likely problem?

Question

bogged down going up mountain pass then EPC light and Ck engine light came on .Just had 120k service w/in 2 months

Answer 1

P0301 Misfire number 1 cylinder

P2271 -02 sensor signal stuck rich stuck rich Bank 1 Sensor 2

The EPC is Electronic Power Control. Which basically means there is no throttle cable it was is referred to as a drive by wire. When there is a P0301 which is a misfire code condition , the system would go lean. but in this case the system is rich. P2271 is detecting a more rich condition. rich condition are indication  that a mechanical inspection should be performed.

Read more : https://www.autocodes.com/p2271.html