Ford's in-house 6.7L Powerstroke (Scorpion) replaced the troubled 6.4L and brought the Powerstroke program back to credibility. The 6.7L is a strong engine - but a few known issues cost owners big money: the CP4.2 fuel pump grenade, EGR cooler cracking, and early single-VGT turbo failures.
The 6.7L Powerstroke is among the most reliable modern diesels. The single biggest financial risk is the Bosch CP4.2 high-pressure fuel pump - one failure can grenade the entire fuel system for $10,000+.
The Bosch CP4.2 high-pressure pump runs dry under low-lubricity diesel and self-destructs. Metal debris contaminates the entire fuel system. A $1,000 bypass kit is the standard preventive move.
Get a free diagnosis →Early 6.7L EGR coolers crack and dump coolant into the intake. Symptoms: white smoke, coolant loss with no leak. 2015+ trucks got an improved cooler.
Get a free diagnosis →Early Garrett turbo had bearing and shaft issues under heavy tow. 2015+ trucks got an updated, stronger turbo design.
View P0299 Diagnosis →Short-trip duty cycles prevent proper regeneration. Common on light-duty owners. Cleaning is $300-$700; replacement is $2,000-$3,500.
View P2002 Diagnosis →Hard cold starts trace to a failed glow plug control module or individual glow plugs. Straightforward fix but parts can backorder in winter.
View P0670 Diagnosis →Plastic-tank radiators and various coolant connections develop slow seeps at high mileage. Standard wear-and-tear.
Get a free diagnosis →Run a free AI diagnosis tailored to your exact diesel. Get the most likely cause in under 30 seconds.
Run a Free Diagnosis100% free · No signup needed · Powered by NHTSA + AI
Ford TSB 14-0080 covers VGT vane cleaning. TSB 16-0157 covers DEF heater software updates. Ford Customer Satisfaction Program 17N03 extends NOx sensor warranty to 10 years / 120,000 miles on 2011-2016 trucks. NHTSA Recall 20V-484 covers SCR catalyst replacement on certain 2020 Super Duty VINs. Check owner.ford.com with your VIN.
If you see a check engine light, these codes most often relate to the issues above. Click any code for full diagnosis steps.
2017-2019 is the sweet spot - updated turbo, refined emissions calibration, mature electronics. 2020+ is even better but commands a premium.
2011-2014 had the most early-program issues - EGR cooler, turbo, and various calibration TSBs. 2015 is the first significantly improved year.
Failure rate is well under 10% but the cost of one failure is catastrophic ($10,000+). A $1,000 disaster-prevention kit is the standard preventive move.
With proper maintenance and a CP4 bypass, 300,000-400,000 miles is common. Without bypass, one CP4 failure can effectively total the engine financially.
Illegal under the Clean Air Act, voids warranty, and prevents registration in most states. Don't.
Oil and filter every 7,500 miles or sooner under tow. Fuel filters every 15,000-20,000 miles. DEF top-offs as needed. Coolant flush every 100,000.