Cm871 code 2637 and 4214

[Bigstank]

Update...... Went to KW in canton, OH cleared these 2 codes and did a regen. No check engine light anymore. During the regen temps shot up fast to 550/1000-1000. And then all 3 cooled to 500 when done. Of course the shop tried to blame the doser saying it's not dosing. but it's been fine since I left their shop oh and by the way it they didn't charge me a penny to hook insight and do this quick clearing