6.7 Powerstroke common problems and what to check
Ford's 6.7L Powerstroke V8 arrived in 2011 Super Duty trucks and has been far more reliable than the 6.0L and 6.4L before it. It still has a set of well-known weak spots, and knowing them helps whether you own one or are shopping.
Bosch CP4.2 high-pressure fuel pump (2011-2019)
The most talked-about 6.7 Powerstroke problem. The Bosch CP4.2 pump can fail internally, shedding metal debris through the injectors and fuel system. Poor fuel lubricity, water and air in the fuel are often blamed. When it fails, the repair usually includes the pump, all injectors, fuel lines and rails, and cleaning the tank, which commonly runs well into five figures.
Ford changed the high-pressure pump design for the 2020 model year redesign. Owners of 2011-2019 trucks often add a fuel additive for lubricity, keep fuel filters fresh, drain the water separator, and buy from busy stations. Some install a disaster prevention kit that sends pump wear debris back to the tank. See water in diesel fuel.
Turbocharger (2011-2014)
Early trucks used a Garrett dual-sided compressor turbo with ceramic ball bearings that had a reputation for failures. Ford changed turbo designs in 2015. Listen for siren noises and watch for boost codes. See diesel turbo symptoms.
EGT sensors and DPF
- Exhaust gas temperature sensors fail often enough to be a routine repair; they can block regens (P2032, P2033, P2080).
- DPF differential pressure sensor hoses can crack.
- Short-trip trucks load the DPF quickly. See DPF regeneration.
Cooling system
- Radiator leaks at the plastic tanks on some years.
- Coolant leaks at the secondary cooling system (the 6.7 has a separate low-temperature loop for the charge air and fuel cooler).
- Water pump leaks.
- Keep coolant to Ford's spec; mixing types causes problems.
DEF and NOx
- NOx sensor failures. See bad NOx sensor symptoms.
- DEF heater and pump issues (P20B9, P20E8).
- Several software updates and extended warranty programs have covered some of these; check the VIN.
Buying a used 6.7 Powerstroke
- Ask for fuel filter and water separator service records.
- Check for rail pressure codes and the fuel pump history.
- Scan for EGT, NOx and DEF codes.
- Check the coolant level and look for crusty leaks around the radiator and degas bottle.
- Look for tuning and deletes; a deleted truck is illegal on public roads.
Related trouble codes
FAQ
What years of 6.7 Powerstroke have the CP4 pump?
The 2011 to 2019 model years used the Bosch CP4.2 high-pressure fuel pump. Ford changed the fuel pump design for later years.
How much does a 6.7 Powerstroke CP4 failure cost to fix?
Because metal debris contaminates the whole fuel system, repairs typically include the pump, injectors, lines and tank cleaning, often costing $10,000 or more.
Is the 6.7 Powerstroke reliable?
Generally yes, especially compared with the 6.0L and 6.4L. Most problems are in the fuel pump, emissions sensors, turbo on early years, and cooling system leaks.
How long does a 6.7 Powerstroke last?
With good maintenance, many pass 250,000 to 300,000 miles. Fuel system care is the biggest factor on 2011-2019 trucks.
More diesel guides
General guidance only. Check the service information, recalls and bulletins for your exact vehicle. Costs are rough 2026 US estimates, not quotes. Need a number for your truck? Try the repair cost estimator.