Decoding the P0446 on Your 2019 Jeep Cherokee
A P0446 code on your 2019 Jeep Cherokee signals an EVAP vent control circuit malfunction. The 2019 model year brought the Cherokee KL facelift with revised styling and the addition of the 2.0L turbocharged four-cylinder (GME-T4) engine option alongside the carryover 2.4L Tigershark and 3.2L Pentastar V6.
Regardless of engine choice, all 2019 Cherokees use the same ESIM (Evaporative System Integrity Monitor) for EVAP vent control. At six years old, this Cherokee is past basic warranty but well within the federal emissions coverage window.
Symptoms to Watch For
- Check engine light on with P0446 stored
- Difficulty filling the fuel tank — nozzle clicking off
- EVAP readiness monitor not completing
- Possible companion codes P0456 or P0441
Most Likely Culprits
- ESIM Module Wear (High Likelihood): After six years of service, the ESIM's internal motor and switch can wear. This integrated vent/leak-detection module is the top P0446 cause on the Cherokee KL. Parts $90–$170, labor $110–$225.
- ESIM Connector Degradation (High Likelihood): Years of road spray, salt, and moisture degrade the underbody ESIM connector. Corroded or loosened pins cause circuit faults. Repair costs $70–$160.
- Wiring Harness Chafing (Medium Likelihood): The ESIM wiring routes along the underbody where it can chafe against body panels or be damaged by road debris over time. Repair costs $95–$280.
- Charcoal Canister Issues (Medium Likelihood): Six years of service — especially with habitual fuel topping-off — can saturate the canister and affect ESIM operation. Parts $145–$300, labor $120–$235.
- Gas Cap Seal Degradation (Low Likelihood): Won't directly cause P0446 but can trigger secondary EVAP codes that confuse diagnosis. New cap $12–$28.
Investigation Steps
- Scan all stored and pending codes with freeze frame data
- Visually inspect ESIM module and connector under the vehicle
- Test ESIM operation using wiTECH bidirectional controls
- Check wiring harness from ESIM to PCM for damage and continuity
- Smoke test the EVAP system if leak codes are also present
- Review TSB history for the 2019 Cherokee KL EVAP system
Repair Costs
- ESIM module replacement: $200–$395
- Connector repair: $70–$160
- Wiring harness repair: $95–$280
- Charcoal canister replacement: $265–$535
- Diagnostic fee: $95–$155
Driving With P0446
P0446 won't impair your Cherokee's performance. Whether you have the 2.4L, 3.2L V6, or 2.0L turbo, engine power and the 9-speed automatic transmission operate normally. The available Active Drive Lock 4WD system is unaffected.
Emissions Warranty
Your 2019 Cherokee is past the 3-year/36,000-mile basic warranty but is covered under the federal emissions warranty (8 years/80,000 miles) through 2027. EVAP components are specifically included. Contact your Jeep dealer to verify eligibility.