Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Circuit Description
The EVAP control system checks for conditions that will cause EVAP system to purge continuously by commanding EVAP vent solenoid on and EVAP canister purge off (EVAP vent solenoid closed and purge valve to zero percent duty cycle). If fuel tank vacuum level increases during the SERVICE BAY TEST, a continuous purge flow condition is indicated. A "stuck open" or leaking purge valve will cause DTC P1441 to set. A continuous purge flow condition is detected when SERVICE BAY TEST is run using scan tool.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.