What P0442 Means for Your 2019 Nissan Rogue
The P0442 code on your 2019 Nissan Rogue means the engine control module has detected a small leak in the evaporative emission control system. This system captures fuel vapors from the gas tank, stores them in a charcoal canister, and feeds them back to the engine for combustion. A P0442 flags a leak approximately the size of a 0.020-inch opening during the system's automated self-test.
The 2019 Rogue is the final year of the first-generation T32 platform, powered by a 2.5L four-cylinder engine. After five-plus years of service, EVAP components are in the prime window for age-related wear. Nissan's EVAP system uses the Purge Volume Control Valve (PVCV), Canister Close Valve (CCV), and a dedicated leak detection pump — all of which become more susceptible to failure as the vehicle ages.
Top Causes Ranked
Here is where to focus the investigation for your 2019 Rogue:
- Worn Gas Cap Seal — After five-plus years of regular use, the gas cap O-ring is a leading suspect. Rubber seals harden and crack over time. A new cap is under $20 and should be tried first.
- PVCV (Purge Volume Control Valve) Wear — Years of engine heat cycling gradually degrade the PVCV's internal seals. A worn valve allows vapor to leak through during sealed-system testing.
- CCV (Canister Close Valve) Failure — The CCV has endured years of moisture, road spray, and environmental exposure. Internal corrosion or seal wear prevents proper closure during leak tests.
- Vapor Hose Aging — Rubber vapor hoses lose flexibility with age and develop hairline cracks. Check connection points and areas near exhaust components where heat damage accumulates.
- Leak Detection Pump Deterioration — The Nissan-specific leak detection pump can develop internal seal wear over years of operation, affecting system pressurization during testing.
DIY Diagnostic Plan
- Replace the gas cap — A new cap ($10–$20) is the cheapest diagnostic step. Install it, clear the code, and drive for several days. This fixes many P0442 cases.
- Check for related codes — Additional EVAP codes can help narrow down which specific component has failed.
- Smoke test — If the gas cap does not resolve it, invest in a professional smoke test ($80–$150) to pinpoint the exact leak location.
- Inspect visible hoses — Check accessible vapor hoses for brittleness and cracks. Stiff, inflexible rubber is a sign of aging.
Costs and Warranty
Repair costs for the 2019 Rogue:
- Gas cap: $10–$20
- PVCV: $130–$270
- CCV: $100–$240
- Leak detection pump: $190–$380
- Vapor hose repair: $70–$180
The basic warranty has expired, but EVAP components are covered under the federal emissions warranty for 8 years or 80,000 miles. For a 2019 model, this coverage extends through approximately 2027. Contact your Nissan dealer to verify eligibility.