P0171 on Your 2024 Dodge Durango
A P0171 code on your 2024 Dodge Durango means the PCM detected a lean air-fuel condition on Bank 1. The 2024 Durango continues with the 3.6L Pentastar V6 and 5.7L HEMI V8 engine options. Running lean means there is too much air or not enough fuel in the combustion mixture on the cylinder bank containing cylinder 1.
Since this is a 2024 model, your Durango should still be under the factory warranty. Here is what you need to know about this code and your repair options.
Symptoms
- Check engine light on
- Rough or unsteady idle
- Hesitation during acceleration
- Fuel economy below expected levels
- Possible engine misfires
- Reduced power when towing or climbing grades
Common Causes
- Vacuum Leak (30% likelihood) - Even on a new vehicle, a factory assembly issue with a vacuum hose or intake gasket can cause a lean condition.
- MAF Sensor Issue (25% likelihood) - A defective or contaminated mass airflow sensor from the factory or from aftermarket intake modifications.
- Fuel System Defect (25% likelihood) - A defective fuel injector or fuel pressure regulator can cause lean conditions on one bank.
- PCM Calibration (20% likelihood) - Stellantis may have a software update available that addresses fuel trim behavior on the 2024 model.
Diagnostic Steps
- Check for TSBs. Have the dealer search for Technical Service Bulletins related to P0171 on the 2024 Durango.
- Monitor fuel trims. LTFT above +10% on Bank 1 confirms the lean condition.
- Inspect intake connections. Verify all vacuum hoses and clamps are properly secured.
- Evaluate MAF sensor. Check live data readings against factory specifications.
- Check for PCM update. A software reflash may be available.
Repair Costs
- Under warranty: $0. Covered by Stellantis factory warranty.
- Vacuum leak repair (out of warranty): $75 - $350.
- MAF sensor replacement (out of warranty): $180 - $300.
- Fuel injector replacement (out of warranty): $250 - $700.
- PCM reflash (out of warranty): $100 - $200.
Warranty Coverage
The 2024 Dodge Durango has a 3-year/36,000-mile basic warranty and 5-year/60,000-mile powertrain warranty. P0171 is a powertrain issue that should be fully covered. Visit an authorized Dodge dealer for no-cost diagnosis and repair.
Prevention Tips
- Use OEM air filters
- Fill up with Top Tier gasoline
- Avoid aftermarket intake modifications while under warranty
- Respond promptly to check engine lights
- Keep dealer service records