What Does P0172 Mean on Your 2022 Dodge Charger?
A P0172 code on your 2022 Dodge Charger means the powertrain control module has detected a rich fuel condition on Bank 1. The 2022 Charger offers the 3.6L Pentastar V6, the 5.7L HEMI V8, the 6.4L 392 HEMI V8, or the supercharged 6.2L Hellcat V8. On all of these V-type engines, Bank 1 is typically the driver's side cylinder bank.
Regardless of engine choice, running rich wastes fuel and can damage emissions equipment. On a performance car like the Charger, you also want every bit of power the engine can deliver — and a rich condition robs you of that edge.
Symptoms You Might Notice
- Check engine light illuminated
- Decreased fuel economy
- Rough idle or vibration
- Black smoke from the exhaust
- Fuel odor at the tailpipe
- Reduced throttle response
Common Causes of P0172 on the 2022 Dodge Charger
- Contaminated MAF Sensor — Aftermarket air intakes popular with Charger owners can introduce oiled filter contaminants to the MAF sensor. Even the stock setup can accumulate debris.
- Stuck-Open Purge Valve — A known Stellantis issue. The EVAP purge solenoid fails and continuously introduces fuel vapors into the intake.
- Worn O2 Sensor — The upstream oxygen sensor on Bank 1 may provide sluggish or biased readings.
- Leaking Fuel Injector — High-performance use and thermal cycling can cause injector seal degradation, especially on the HEMI.
How to Diagnose the Problem
- Scan all DTCs — Check for companion codes across both banks and related systems.
- Compare fuel trim data — Bank-specific analysis determines whether the issue is localized or system-wide.
- Test MAF sensor — Compare readings to Stellantis specs for your specific engine.
- Test purge valve — Bidirectional control test with a scan tool.
- Monitor O2 sensor — Check Bank 1 Sensor 1 switching speed and voltage range.
- Test fuel injectors — Balance test or flow test to find leaking units.
Repair Options and Cost Estimates
- MAF Sensor Cleaning — DIY: $10-$15. Shop: $55-$115.
- MAF Sensor Replacement — Parts: $75-$180, labor: $55-$115. Total: $130-$295.
- Purge Valve Replacement — Parts: $25-$65, labor: $55-$115. Total: $80-$180.
- O2 Sensor Replacement — Parts: $75-$195, labor: $90-$175. Total: $165-$370.
- Fuel Injector Replacement — Parts: $50-$150 each, labor: $190-$400. Total: $240-$550.
Can You Fix This Yourself?
MAF cleaning and purge valve replacement are very DIY-friendly. If you have an aftermarket air intake, remove it and clean the MAF — this alone fixes the problem in many cases. O2 sensor replacement is moderate. Injector work, especially on the HEMI, is more complex.
Prevention Tips
- If using a cold air intake, ensure the filter is clean and properly oiled (not over-oiled)
- Replace the stock air filter on schedule
- Use quality fuel — premium for HEMI and Hellcat models
- Follow Dodge's maintenance schedule