Ford Explorer Common Problems & Reliability Guide

A widespread and dangerous issue where exhaust fumes, including carbon monoxide, enter the passenger cabin through cracked body seams near the rear liftgate or damaged exhaust systems. Over 2,700 complaints were filed with NHTSA reporting headaches, nausea, dizziness, and loss of consciousness. While NHTSA did not mandate a recall, Ford issued a service campaign to reprogram the HVAC, replace liftgate drain valves, and inspect rear sealing. Police departments pulled many Explorer Police Interceptor units from service due to this life-threatening defect.

Typical mileage: Any mileage

The PTU on AWD Explorers has a chronic seal failure issue causing fluid leaks. The PTU lacks a dipstick or drain plug for maintenance, and Ford marketed it as 'lifetime fill,' leading to accelerated wear. A leaking PTU produces a propane-like odor, grinding noises, and shuddering during acceleration. If the PTU seizes while driving, it can cause transmission damage and loss of vehicle control. This is one of the most expensive and common failures on AWD Explorers.

Typical mileage: 50,000-100,000 miles

The 3.5L EcoBoost V6 (especially first-generation engines from 2011-2015) suffers from premature timing chain stretch, worn guides, and tensioner failures. The internally-mounted chain-driven water pump adds complexity—if it fails, coolant can contaminate the engine oil, causing catastrophic damage. Symptoms include cold-start rattling noise, rough idle, loss of power, and P0340 codes. Repair requires engine disassembly and costs $4,500-$6,000 including cam phasers.

Typical mileage: 80,000-120,000 miles, but can fail earlier

AWD Explorers frequently develop rear differential pinion seal or axle seal leaks, leaving oil spots on driveways. If fluid levels drop too low, the differential can overheat and fail, requiring expensive replacement. Regular inspection and fluid changes can prevent catastrophic failure.

Typical mileage: 60,000+ miles

Both Bank 1 and Bank 2 catalytic converters commonly fail due to heat exposure, oil contamination from PTU or turbo leaks, or normal aging. EcoBoost engines are particularly prone due to higher exhaust temperatures. Failed converters cause P0420/P0430 codes, reduced power, and emissions test failures.

Typical mileage: 90,000-130,000 miles

EcoBoost engines experience frequent ignition coil pack failures due to heat and vibration. Failed coils cause misfires, rough idle, loss of power, and poor fuel economy. Cylinder-specific misfire codes help identify which coil has failed.

Typical mileage: 50,000-100,000 miles

The evaporative emissions system develops leaks from deteriorated purge valves, cracked hoses, damaged fuel filler necks, or faulty gas cap seals. These trigger persistent EVAP codes and prevent the vehicle from passing emissions testing.

Typical mileage: 60,000+ miles

The plastic intake manifold can develop cracks, and PCV hoses deteriorate over time, causing vacuum leaks that trigger lean condition codes (P0171/P0174). These leaks cause rough idle, poor throttle response, and reduced fuel economy.

Typical mileage: 70,000+ miles

The 10R60/10R80 10-speed automatic transmission suffers from harsh shifting, delayed engagement, jerking between gears, and hunting for the correct gear at low speeds. Ford issued TSB 20-2035 addressing harsh 7-6 downshifts and TSB 21-2035 for main valve body replacement. Some vehicles have experienced complete transmission failures requiring replacement at low mileage. The P0772 code (shift solenoid E stuck) is a common failure mode.

Typical mileage: 10,000-60,000 miles, some failures under 5,000 miles

A critical safety defect where the PCM can unexpectedly reset, potentially causing the electronic parking system to disengage and allowing the vehicle to roll away even when the shifter is in Park. Ford issued recall 23V-069 in February 2023 to address this dangerous issue affecting 2020-2022 Explorers.

Typical mileage: Any mileage

The 3.0L twin-turbo V6 (especially in ST models) can develop oil leaks from valve covers, oil pan gaskets, and turbocharger oil feed lines. Some units experience wastegate actuator failures or turbo bearing wear causing oil consumption, blue smoke, and loss of boost pressure. These are expensive repairs requiring specialized tools and knowledge.

Typical mileage: 40,000-80,000 miles

2020-2024 Explorer Hybrid models can experience hybrid battery cooling system failures, causing reduced electric driving range, battery overheating warnings, and complete hybrid system shutdowns. Coolant pump failures and blocked coolant passages are common culprits.

Typical mileage: 50,000-90,000 miles

The sixth-generation Explorer is plagued by electrical gremlins including malfunctioning infotainment systems (SYNC 3/SYNC 4), failing proximity sensors, inoperative power liftgates, and random warning lights. Body Control Module (BCM) and Accessory Protocol Interface Module (APIM) failures are common, often requiring complete replacement.

Typical mileage: 20,000-70,000 miles

Both turbocharged EcoBoost engines and the hybrid powertrain experience early catalytic converter failures due to high exhaust temperatures, fuel contamination, or catalyst material breakdown. This triggers P0420/P0430 codes and can cause the vehicle to fail emissions testing.

Typical mileage: 60,000-100,000 miles

Like previous generations, persistent EVAP leak codes continue to plague Explorers due to aging purge valves, charcoal canisters, fuel filler neck seals, and deteriorated hoses throughout the evaporative emissions system.

Typical mileage: 40,000+ miles

EcoBoost engines continue to experience frequent ignition coil failures causing misfires, rough idle, and check engine lights. The direct-injection system also causes carbon buildup on intake valves over time, exacerbating misfire issues.

Typical mileage: 30,000-70,000 miles