Following the P0446 Trail on Your 2022 Jeep Wrangler
Your 2022 Jeep Wrangler has flagged a P0446 code — an EVAP vent control circuit malfunction. The JL Wrangler uses Stellantis' ESIM (Evaporative System Integrity Monitor) instead of a traditional vent solenoid. Whether your Wrangler has the 3.6L Pentastar V6 or 2.0L turbo, the ESIM handles both vent control and leak detection in one integrated unit, and the PCM has found a circuit fault.
The Wrangler's body-on-frame construction and off-road adventures expose EVAP components to harsh conditions. At three to four years old, both trail wear and warranty coverage are in play.
Symptoms at the Scene
- Check engine light on with P0446
- Fuel nozzle clicking off during fill-ups
- EVAP readiness monitor not completing
- May appear with P0440, P0455, or P0456
Ranked Suspects
- ESIM Unit Failure (High Likelihood): The integrated ESIM module near the fuel tank is the primary P0446 suspect on Stellantis vehicles. Electrical failure from trail exposure and thermal cycling is common. Parts $80–$180, labor $120–$250.
- ESIM Wiring or Connector Damage (High Likelihood): Off-road exposure to water, mud, rocks, and debris damages the ESIM connector and wiring. Repair costs $100–$300.
- Purge Solenoid Issue (Medium Likelihood): A failing purge solenoid creates abnormal system pressure affecting ESIM readings. Replacement costs $80–$200.
- Charcoal Canister Damage (Medium Likelihood): Trail impacts can crack or damage the charcoal canister on the body-on-frame Wrangler. Replacement costs $180–$400.
- PCM Software Calibration (Low Likelihood): Updated software may adjust EVAP monitoring. Dealer reflash $100–$200.
Diagnostic Steps
- Scan for codes — P0446 plus any ESIM-related companions
- Locate the ESIM near the fuel tank
- Inspect the ESIM connector for water intrusion, mud, or corrosion
- Test the ESIM circuit with a multimeter
- Use wiTECH or a Stellantis-compatible scanner for bidirectional ESIM testing
- Inspect the charcoal canister for physical damage from off-road use
Cost Breakdown
- ESIM replacement: $200–$430
- Wiring/connector repair: $100–$300
- Purge solenoid: $80–$200
- Charcoal canister: $180–$400
- Diagnostic fee: $100–$160
Can I Drive With P0446?
Yes. P0446 doesn't affect your Wrangler's engine, 4WD, Dana axles, or lockers. Full on-road and off-road capability remains.
Warranty Check
Your 2022 Wrangler may still be within Jeep's 3-year/36,000-mile basic warranty — check your mileage. The federal emissions warranty covers EVAP for 8 years/80,000 miles. Visit the dealer first.