2015 Ford F-150

Reliability tier: verified - see /disclosure/

Engine: 3.5L V6 EcoBoost (Gen1) (Ford EcoBoost, 3.5L)

DOHC 24-valve twin-turbo V6 (3.5L Cyclone EcoBoost), GDI only, 10.0:1 CR, BorgWarner low-inertia twin turbochargers, Ti-VCT; 365 hp @ 5,000 / 420 lb-ft @ 2,500; 6R80 6-speed. Gen1 of the engine family (no port injection).

Applicable failure modes (9)

• Charge-air-cooler condensation: boost shudder / hesitation in humid weather
• Cam phaser / VCT rattle and cam-timing DTCs
• Cooling service: thermostats, hoses, degas system under tow load
• Internal mechanical failures / long-block decisions
• Low-pressure fuel delivery (in-tank pump / pressure faults)
• Ignition misfires: spark plugs and COP coils
• Timing chain stretch / guide wear (Gen1 era)
• Turbo / wastegate / boost-control faults
• Internal water pump: coolant loss and coolant-into-oil risk

Applicable parts (26)

• 3.5L EcoBoost Charge Air Cooler, Gen2 (FL3Z-6K775-B)
• 3.5L EcoBoost Cam Phaser / Timing Actuator (AT4Z-6256-B)
• 3.5L EcoBoost Coolant Tube Assembly (Ford BL3Z-8K153-AB, 2011-2016 F-150 / Transit 2015-2019)
• Cooling system refill with fresh coolant (service item, all 3.5L EcoBoost applications)
• 3.5L EcoBoost Service Engine Assy / Long Block, Gen1 (DL3Z-6006-ARM)
• In-tank fuel filter service (integral to the pump module, all 3.5L EcoBoost applications)
• 3.5L EcoBoost GDI Injector, Gen1 (BL3Z-9F593-B)
• Cylinder head / block machining and SSM calibration updates (service item, long-block decisions)
• HPFP failure contamination procedure - flush, rails, injector inspection (service item)
• 3.5L EcoBoost High-Pressure Fuel Pump, Gen1 (current number BL3Z-9350-D)
• 3.5L EcoBoost Ignition Coil, Gen1 (BL3Z-12029-C)
• KC Turbos Upgraded Intercooler, all-aluminum bar-and-plate (3.5L EcoBoost F-150 2015-2024)
• Engine oil and filter change (service item, all 3.5L EcoBoost applications)
• 3.5L EcoBoost Spark Plug, Gen1 (current number CYFS-12-YT4X)
• 3.5L EcoBoost Thermostat, Gen1-Gen2 (BL3Z-8575-B)
• 3.5L EcoBoost Thermostat Housing / Water Outlet, Gen1-Gen2 (BL3Z-8A586-G)
• 3.5L EcoBoost Timing Chain (AT4Z-6268-C)
• 3.5L EcoBoost Timing Chain Guide (AT4Z-6B274-A)
• 3.5L EcoBoost Timing Chain Tensioner (BL3Z-6L266-A)
• 3.5L EcoBoost Turbocharger Assy, Gen1 (pair DL3Z-6K682-E / -F)
• 3.5L EcoBoost Turbo Control Solenoid, Gen1 (BL3Z-9K378-A)
• 3.5L EcoBoost Valve Cover (BL3Z-6582-H, other side)
• 3.5L EcoBoost Valve Cover (DL3Z-6582-C, one side)
• 3.5L EcoBoost Valve Cover Gasket, Gen1 (pair BL3Z-6584-A / DL3Z-6584-B)
• 3.5L EcoBoost VCT Solenoid (Ford AT4Z-6M280-A / -B, one per intake/exhaust position; four per engine)
• 3.5L EcoBoost Water Pump, Gen1 (current number ER3Z-8501-C)

Platform recipes (5)

• CAC-condensation shudder fix: the Gen1 pattern (humid-day single shudder after light-throttle cruising) traces to pooled condensate in the charge-air cooler
• Ignition service for the boost-stressed 3.5L EcoBoost: misfire DTCs first, then plugs and the failed coil(s)
• Cam-phaser rattle / timing-chain service: the cold-start rattle and cam-timing DTCs (P0011/P0015-P0019/P0365/P0369) span generations - Gen2 got formal TSBs (20-2191/20-2166/20-2315) and the 21N08/21B10-S1 PCM-reprogram field actions; Gen1 carries the chain-wear story (TSB 17-0026)
• Turbo / boost-control service: boost DTCs (P0236/P0238/P0299 family) first, hardware second
• Internal water-pump service: the 3.5L EcoBoost carries the pump inside the front cover - a failed seal can send coolant into the oil pan (bearing damage) or leak externally

Recalls that include this truck (2)

• 20V-332 (June 8, 2020) - SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER: Ford Motor Company (Ford) is recalling certain 2014-2017 F-150 pickup trucks equipped with 3.5L Ecoboost engines. The brake master cylinder may leak brake fluid into the brake booster.
• 20V-098 (February 21, 2020) - ENGINE: Ford Motor Company (Ford) is recalling certain 2015-2016 F-150 pick-up trucks equipped with 3.5L GTDI engines and block immersion heaters that were potentially relocated from their originally installed location. The...

Matched by the model and model year NHTSA lists for each recall - a recall often covers only part of a year's production, so read its text for the build dates and versions it names. Whether a recall is still open on your VIN is not known here; check nhtsa.gov/recalls. All recalls, investigations and bulletins for this engine: /recalls/ford-ecoboost-3_5/

Reference for this truck