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.
EVAP Running Loss System Repair Verification Drive Cycle
Ensure Vehicle Preparation has been performed. Cruise at 45-65 MPH for 10 minutes while avoiding sharp turns and hills. To initiate EVAP monitor, EVAPCV PID must increase to at least 75 percent (canister purge vent open). At this time, EVAPCV PID will display 100 percent (canister vent solenoid closed to seal the system). Monitor will begin to run. Continue to drive with a steady throttle and light steering until EVAPCV displays zero percent (canister vent solenoid open). Stop vehicle. Using scan tool, view EVAP monitor for completion through the On-Board System Readiness Test Menu. Repeat procedure if EVAP monitor is not complete. If EVAP monitor is complete, verify no DTCs are set with the exception of DTC P1000.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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