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.
Checking components
- Check that the fuel tank filler cap is properly installed and that its seal is not damaged
- Check the hoses and connections on the leak diagnostic unit, the EVAP canister, EVAP canister purge valve and fuel filler pipe visually for damage or loose installation
- Remedy as necessary.
HINT: Diagnostic trouble codes (DTCs) caused by a loose fuel filler cap or hose connection may be difficult to find. If no leakage if detected by the control module when activating the quick test of the fuel tank system after the above checks and remedies, the fault may have been fixed.
Other information
- To test pressurize the fuel tank system, see Test pressurizing the tank system .
- Continue
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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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