why does my Toyota Camry engine light come on after filling gas

Solution

1. Preparation

• Gather tools and parts needed for repair.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the negative battery cable to prevent electrical issues.

2. Inspect and Replace Gas Cap

• Tools Required: Socket set, torque wrench.
• Remove the gas cap, inspect for damage, and clean the sealing surface.
• If damaged, replace with a new gas cap, ensuring it clicks securely into place.
• Torque the gas cap to the manufacturer's specifications (usually hand-tight).

3. Check for EVAP System Issues

• Tools Required: OBD-II scanner, multimeter.
• Reconnect the negative battery cable.
• Use the OBD-II scanner to clear any error codes and perform a drive cycle.
• If the check engine light returns, perform a visual inspection of the EVAP hoses for cracks or disconnections.
• Test the purge valve and charcoal canister using a multimeter for proper operation; replace if faulty.

4. Repair Fuel Leaks (if applicable)

• Tools Required: Leak detection kit, wrench set.
• Inspect the fuel lines and connections for leaks.
• Tighten any loose fittings or replace damaged hoses and fittings as necessary.