What Does P0172 Mean on Your 2022 Dodge Durango?
A P0172 code on your 2022 Dodge Durango indicates the PCM has detected a rich fuel condition on Bank 1. The 2022 Durango comes with the 3.6L Pentastar V6 (295 hp) or the 5.7L HEMI V8 (360 hp). Bank 1 is the driver's side cylinder bank on both V-configuration engines.
Running rich reduces fuel economy and stresses emissions components. For a family SUV that you depend on daily, addressing this code promptly keeps everything running smoothly.
Symptoms You Might Notice
- Check engine light on
- Decreased fuel economy
- Rough idle or vibration
- Black smoke from the exhaust
- Fuel smell from the tailpipe
- Slight hesitation under load
Common Causes of P0172 on the 2022 Dodge Durango
- Dirty MAF Sensor — Contamination from dust, debris, or oiled filter residue causes airflow under-reporting.
- Stuck-Open Purge Valve — A known Stellantis issue. The EVAP purge solenoid sticks open and enriches the intake charge.
- Failing O2 Sensor — The Bank 1 upstream oxygen sensor may be providing inaccurate readings.
- Leaking Fuel Injector — Injector seal degradation allows extra fuel into the cylinder.
How to Diagnose the Problem
- Read all DTCs — Check for companion codes.
- Analyze fuel trims — Compare Bank 1 and Bank 2 LTFT values.
- Test MAF sensor — Verify output against factory specs.
- Test purge valve — Bidirectional scan tool control test.
- Monitor O2 sensor — Check voltage and switching speed.
- Test fuel injectors — Balance or flow test.
Repair Options and Cost Estimates
- MAF Sensor Cleaning — DIY: $10-$15. Shop: $60-$115.
- MAF Sensor Replacement — Parts: $75-$185, labor: $60-$115. Total: $135-$300.
- Purge Valve Replacement — Parts: $25-$65, labor: $60-$115. Total: $85-$180.
- O2 Sensor Replacement — Parts: $75-$195, labor: $90-$175. Total: $165-$370.
- Fuel Injector Replacement — Parts: $50-$150 each, labor: $200-$400. Total: $250-$550.
Can You Fix This Yourself?
MAF cleaning and purge valve replacement are easy DIY jobs. The Durango's engine compartment has decent access. O2 sensor replacement is moderate difficulty. Injector work on the HEMI is best left to a shop.
Prevention Tips
- Replace the air filter at recommended intervals
- Avoid oiled aftermarket filters
- Use quality fuel
- Follow Dodge's maintenance schedule