What P0174 Means on Your 2022 Ford Maverick
A P0174 code on your 2022 Ford Maverick indicates a lean condition on Bank 2. The 2022 Maverick offers a 2.5L Atkinson-cycle hybrid powertrain as standard and a 2.0L EcoBoost turbocharged 4-cylinder as the optional engine. The P0174 code most commonly applies to the 2.0L EcoBoost, which is the only engine option with a turbocharger and the greater susceptibility to lean conditions. A lean condition means the air-fuel ratio has shifted toward too much air.
Symptoms You May Experience
- Check engine light on
- Rough idle or idle fluctuation
- Hesitation during acceleration
- Reduced towing capability
- Fuel economy drops below normal
- Possible whistling from the engine bay
Most Likely Causes
- Boost Leak (35% likelihood) - The 2.0L EcoBoost turbo plumbing has clamp connections and intercooler pipes that can loosen. The Maverick's unibody truck platform introduces vibrations that can accelerate this.
- MAF Sensor Issue (25% likelihood) - A contaminated mass airflow sensor reads incorrect air volume and causes lean fuel metering.
- PCV System Leak (20% likelihood) - The PCV valve or hoses on the 2.0L can fail, creating an unmetered air leak.
- Fuel System Problem (20% likelihood) - Low fuel pressure from a weakening pump or restricted fuel supply.
Diagnosis Steps
- Read all codes - Check for P0171 and any boost or misfire codes.
- Boost leak test - Pressurize the intake and turbo plumbing to find leaks.
- Test MAF sensor - The 2.0L EcoBoost should read about 5-8 g/s at idle. Clean sensor first.
- Inspect PCV system - Check valve and all connected hoses.
- Monitor fuel pressure - Compare fuel rail pressure to Ford specifications.
Repair Cost Estimates
- Boost leak repair - $80 to $280.
- MAF sensor replacement - $120 to $280 with labor.
- PCV valve replacement - $50 to $160.
- Fuel pump replacement - $350 to $650.
Warranty Coverage
Your 2022 Maverick may still be under the bumper-to-bumper warranty depending on mileage. The 5-year/60,000-mile powertrain warranty should cover engine-related P0174 causes. Check with your Ford dealer.
Prevention Tips
- Use OEM-style air filters
- Inspect boost connections during oil changes
- Use Top Tier fuel for clean injectors
- Clean the MAF sensor every 20,000 miles
- Follow Ford's maintenance schedule