Solving P0446 on Your 2023 Dodge Challenger
A P0446 code on your 2023 Dodge Challenger signals an EVAP vent control circuit malfunction. As the final model year for the ICE Challenger, the 2023 uses the proven LC/LA platform with Stellantis' NVLD (Natural Vacuum Leak Detection) system across all variants—from the 3.6L Pentastar V6 through the legendary supercharged HEMI lineup.
Under active warranty, this is a no-cost dealer repair. Stellantis' wiTECH system provides precise EVAP diagnostics.
Symptoms Present
- Check engine light with P0446
- Fuel fill difficulty
- EVAP readiness monitor incomplete
- Possible fuel odor
Top Suspects
- NVLD Unit Defect (High Likelihood): Manufacturing variation in the NVLD switch or seal. Warranty-covered replacement.
- PCM Software Calibration (High Likelihood): Final-year EVAP monitoring calibration update. Warranty-covered reflash.
- Purge Solenoid Issue (Medium Likelihood): Defective purge solenoid affecting system flow. Warranty-covered.
- NVLD Connector or Wiring (Medium Likelihood): Factory assembly issue. Warranty-covered.
- Gas Cap Seal (Low Likelihood): Factory fit issue. Warranty-covered.
What to Do
Take your Challenger to a Dodge dealer. Under warranty, wiTECH diagnostics and all repairs are free. The dealer will check for any TSBs specific to the final-year Challenger.
Warranty Coverage
Your 2023 Challenger is covered by Dodge's 3-year/36,000-mile basic and 5-year/60,000-mile powertrain warranty. All EVAP diagnostics and repairs are covered at no cost.
Safe to Drive?
Yes. P0446 has no effect on your Challenger's engine performance, HEMI power, transmission, or any driving dynamics. The final-year muscle car maintains full capability.