What Does P0172 Mean on Your 2023 Dodge Challenger?
A P0172 code on your 2023 Dodge Challenger means the PCM has detected an overly rich fuel mixture on Bank 1. The 2023 Challenger — the final model year for this iconic muscle car — is available with engines from the 3.6L Pentastar V6 to the 6.2L supercharged Hellcat. Bank 1 is the driver's side on all V-type engines.
As a collector-worthy final year, keeping your 2023 Challenger in top mechanical shape is important. A P0172 code is usually an easy fix that restores your car to peak condition.
Symptoms You Might Notice
- Check engine light on
- Reduced fuel economy
- Rough idle
- Black exhaust smoke
- Fuel odor at the tailpipe
- Slightly dulled throttle response
Common Causes of P0172 on the 2023 Dodge Challenger
- Contaminated MAF Sensor — Aftermarket intake contamination or factory debris on the MAF sensor element.
- EVAP Purge Valve Failure — A recurring Stellantis issue — the purge solenoid sticks open.
- O2 Sensor Issue (Bank 1) — Though unlikely on a newer car, a defective sensor can cause P0172.
- Fuel Injector Leak — HEMI injectors can develop seal issues, allowing fuel seepage.
How to Diagnose the Problem
- Read all stored and pending codes — Companion codes narrow the diagnosis.
- Analyze fuel trim data — Compare Bank 1 and Bank 2 LTFT values.
- Test MAF sensor — Compare readings to Stellantis specs for your engine.
- Test purge valve — Command open/close verification.
- Monitor O2 sensor — Voltage and switching speed analysis.
- Test fuel injectors — Balance or flow testing.
Repair Options and Cost Estimates
Your 2023 Challenger may still be under warranty. Check your mileage against the 3-year/36,000-mile basic warranty.
- MAF Sensor Cleaning — DIY: $10-$15. Shop: $55-$115.
- MAF Sensor Replacement — Parts: $80-$185, labor: $55-$115. Total: $135-$300.
- Purge Valve Replacement — Parts: $25-$65, labor: $55-$115. Total: $80-$180.
- O2 Sensor Replacement — Parts: $80-$200, labor: $90-$175. Total: $170-$375.
- Fuel Injector Replacement — Parts: $50-$155 each, labor: $190-$400. Total: $240-$555.
Can You Fix This Yourself?
The Challenger's roomy engine bay makes DIY work a pleasure. MAF cleaning, purge valve swaps, and O2 sensor replacement are all within reach. Check warranty coverage first — if still active, let the dealer handle it at no cost.
Prevention Tips
- Use high-quality air filters and avoid over-oiling aftermarket filters
- Follow Dodge's maintenance schedule
- Use premium fuel for HEMI and Hellcat engines
- Keep your Challenger's fuel system clean for peak performance