Certain 2014-2016 Model Year F-250 ? F-550 and 2016 Model Year F-650 - F-750 Vehicles, With 6.7L Diesel Engine - Crankcase Ventilation Oil Separator Assembly
full bulletin at NHTSA ↗2014 Ford F-250 engine problems
severe 13 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
13
Recalls
0
Avg fix
$3,100
1fire
When does it fail?
Of the 13 engine complaints filed for the 2014 Ford F-250, here's the actual mileage breakdown — failures cluster heaviest at 100,000-125,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
No new NHTSA engine complaint has been filed on this vehicle in over 7 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
The Powertrain Control/Emissions Diagnosis (PC/ED) manual has been revised for diagnosing electronic throttle bodies (ETBs). The ETC_ACT and ETC_DSD PIDs should not used to diagnose possible ETB concerns. The IDS has a limited refresh rate when reading these PIDs and cannot display quickly enough to validate a concern. The PCM automatically monitors these inputs more accurately and will set diagnostic trouble codes (DTCs) when appropriate. Using these PIDs for diagnostics will lead to inaccurate results and improper ETB replacements. If a concern is intermittent and no DTCs are present, refer to historical DTCs and the PC/ED, Section 3 No DTCs Present Index chart for further information.
full bulletin at NHTSA ↗FORD: 2011-2014 F-SUPER DUTY VEHICLES EQUIPPED WITH 6.7L DIESEL ENGINE MAY EXPERIENCE A RUNNING ROUGH OR MISFIRE DURING EXHAUST REGENERATION PROCESS
full bulletin at NHTSA ↗FORD: SOME MODEL VEHICLES MANUAL FOR POWERTRAIN CONTROL/EMISSION DIAGNOSTIC (PC/ED) HAS BEEN UPDATED REGARDING IMPROVED COOLING FAN CIRCUIT DUE TO A LACK OF AIR CONDITIONING, A MALFUNCTIONING INDICATOR LAMP (MIL) AND OVERHEATING.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
High-pressure fuel pump failure stands out as the most severe issue. One owner's truck dropped from highway speed to 30 mph without warning and then died completely; the dealer found the pump had failed and sent metal shards throughout the motor, demanding a $9,400 repair. Multiple trucks were waiting for replacement pumps at the same dealer, suggesting a parts availability problem on top of the failure itself.
DEF heater assembly failures are widespread. Owners at 65,000, 85,000, and 120,000 miles all report check engine lights tied to the reductant heater (diagnostic P20BA). The frustration runs deep because Ford's FSA 18M01 covers the part on 2011-2012 and 2011-2015 models, but excludes 2013-2015 F-250/350 trucks—meaning owners of the exact vehicles affected cannot get warranty help. This locks them out of emissions inspections.
EGR system problems appear in multiple forms: one owner's EGR cooler leaked coolant and caused steering seizure at 114,000 miles; another hit limp mode at 147,000 with a 50-mph speed governor. Exhaust gas temperature sensors fail repeatedly—one truck had all four replaced twice by 41,000 miles and was heading back in for a fourth visit.
Other reported failures include raw fuel ignition in the exhaust (causing an engine fire and requiring full motor replacement), fuel system water contamination after dealer service, front engine cover bolts loosening and causing $4,000 repair bills, and sudden transmission downshifts at highway speed that nearly caused accidents.
Same Ford F-250 engine reports on nearby years: 2011 · 2012 · 2013 · 2015 · 2016
Failure modes owners describe
High-pressure fuel pump failure
Pump internal components deteriorate and shed metal particles into engine oil. Causes sudden loss of power and complete engine shutdown without warning.
When: 195,000 miles (one case); reported as affecting multiple trucks in dealers' service queues
Symptoms owners cite: Vehicle drops speed suddenly from highway to slow speed; Complete engine shutdown; No warning lights before failure
Repairs/costs cited: Complete engine replacement required; one owner quoted $9,400 for repair due to metal contamination throughout motor. Availability of replacement pumps reported as problematic.
Reductant (DEF) heater assembly failure
Diesel exhaust fluid heater and sender assembly fails, causing check engine light and emissions test failure. Occurs on 6.7L diesel engines despite Ford FSA 18M01 coverage excluding 2013-2015 F-250/350 models.
When: 85,151 miles; 120,000 miles; under 65,000 miles (one case)
Symptoms owners cite: Check engine warning light illumination; Vehicle fails emissions inspection; Flashing service engine indicator
Codes mentioned: P20BA
Repairs/costs cited: Reductant heater and sender assembly (part 5J225) replacement required. Part used across 2011-2016 model years but Ford FSA 18M01 excludes 2013-2015 F-250/350.
Recalls/TSBs owners mention: Ford FSA 18M01 (Reductant Heater and Sender Assembly Repair) covers 2011-2012 and 2011-2015 models but excludes 2013-2015 F-250/350 per owner complaint; manufacturer did not authorize repair on excluded vehicles
EGR cooler coolant leak
Coolant leaks from EGR cooler, causing cooler failure and engine shutdown during operation. Steering wheel seizes when failure occurs.
When: 114,081 miles
Symptoms owners cite: Vehicle shaking while driving at low speed; Steering wheel seizure; DEF warning light illumination; Engine shutdown
Repairs/costs cited: EGR cooler replacement required.
EGR system failure and limp mode engagement
Exhaust gas recirculation system fails, causing vehicle to enter limp mode with speed restriction to 50 MPH. No warning lights illuminate prior to speed limiter message.
When: 147,000 miles
Symptoms owners cite: Speed limited to 50 MPH message displayed; Vehicle enters limp mode; No warning lights illuminated before failure
Recalls/TSBs owners mention: Related to Customer Satisfaction Program 21M04; manufacturer opened case and referred contact to NHTSA hotline
Fuel system water contamination and sensor disconnection
Water collects in fuel separator; water-in-fuel sensor becomes unplugged during radiator repair. Subsequent fuel system contamination causes vehicle to enter reduced power mode.
When: Failure occurred February 7, 2015 after radiator repair on January 26-February 3, 2015
Symptoms owners cite: Low engine warning light; Water in fuel separator; Reduced power mode activation; Reduced power light illumination
Repairs/costs cited: Entire fuel system replacement required after water-in-fuel sensor was found unplugged by dealership.
Exhaust raw fuel ignition and cylinder misfire
Cylinder one misfires and raw fuel dumps into exhaust manifold, igniting and causing engine fire while hauling trailer. Exhaust particulate filter reaches maximum limit.
When: 195,000 miles
Symptoms owners cite: Raw fuel dumping into exhaust manifold; Exhaust fire; Exhaust filter over maximum limit message; Cylinder one down (misfire)
Repairs/costs cited: Engine and transmission replacement required; EPF (exhaust particulate filter) possibly damaged.
Exhaust gas temperature (EGT) sensor repeated failures
All four exhaust gas temperature sensors fail prematurely and repeatedly. Sensors require replacement multiple times within warranty period, indicating systemic defect in sensor design or engine thermal management.
When: 41,000 miles (third dealer visit); 82,000 miles (fourth replacement cycle)
Symptoms owners cite: Check engine light illumination; All four EGT sensors failing
Repairs/costs cited: All four exhaust gas temperature sensors replaced twice on one vehicle; another vehicle required sensors replaced four times by 82,000 miles.
Front cover oil leak from loose bolts
Front engine cover bolts loosen and vibrate free, causing oil leaks that spread contamination over front and bottom of engine. Owner reports dealer charges $4,000 to tighten fourth bolt that cannot be reached by normal means. Problem reported on multiple F-250s at same dealer.
When: Mileage not specified
Symptoms owners cite: Oil leak from front engine cover; Oil contamination spreading across engine front and bottom
Repairs/costs cited: Four bolts require tightening; three accessible by sight, fourth bolt costs $4,000 to access and tighten. Dealer reports multiple F-250s with same issue.
Transmission sudden downshift during highway driving
Transmission shifts gears abruptly and slows vehicle without warning while driving at highway speed. Creates safety hazard and nearly caused accident. Owner reports other Ford models have recalls for same failure but this model excluded.
When: Mileage not specified; occurred at least twice
Symptoms owners cite: Sudden unexpected gear shift; Abrupt vehicle deceleration; No warning lights or messages
Recalls/TSBs owners mention: Recalls exist for same issue on other Ford models but do not include this 2014 F-250 model
Synthesized from 13 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
Tl* the contact owns a 2014 Ford f-250 sd. The contact stated that the check engine warning indicator illuminated. Medved Ford (1404 s wilcox st, castle rock, co 80104, (303) 688-3137) diagnosed that the failure was related to customer satisfaction program campaign number: 18m01 (reductant heater and sender assembly repair); however, the dealer and manufacturer indicated that the vehicle was…
Had engine trouble with your 2014 Ford F-250?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2014 Ford F-250?
It's a meaningful issue. 13 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Across the 9 complaints that reported odometer mileage, most engine failures cluster between 82,000 and 134,000 miles, with the median around 114,081. A quarter of owners report trouble before 82,000; a quarter make it past 134,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2014/Ford/F-250.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.