Both codes indicate that the DPF has reached the end of its service life and must be replaced. Replace DPF and perform Ash Accumulator reset using DDDL.
Aftertreatment maintenance intervals:
- EPA 07: Remove ash at 300,000miles(480,00km) or 9,000 hours
- EPA10/GHG14: Remove ash at 300,000-400,000miles(480,000-640,000km) or 9,000-10,250 hours
- EPA10/GHG14: DEF pump filters are to be replaced every 150,000miles(240,000km)
- EPA10: DEF pump air bladder, needs to be refilled every 24 months