why does my Toyota Camry's engine light keep coming on

Solution

1. Preparation

• Gather the necessary tools and parts.
• Ensure the vehicle is on a flat surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Replace Faulty Components

A. Spark Plugs

1. Remove the ignition coils (if applicable) using a socket set.
2. Use a spark plug socket to remove the old spark plugs.
3. Inspect the spark plugs for wear; replace with new ones if necessary, using proper torque specifications (typically 13-16 ft-lbs).
4. Reattach the ignition coils securely.

B. Air Filter

1. Open the air filter housing by loosening the clips or screws.
2. Remove the old air filter and inspect for dirt and debris.
3. Install a new air filter, ensuring it fits snugly in the housing.
4. Reassemble the air filter housing.

3. Repair or Replace Other Components

A. Gas Cap

1. Inspect the gas cap for cracks or damage; replace if necessary.
2. Ensure it clicks securely when reattached to prevent evaporation leaks.

B. Faulty Sensors

1. If error codes indicate a faulty sensor (e.g., O2 sensor), locate it based on the vehicle's service manual.
2. Disconnect the sensor connector and remove it using the appropriate socket.
3. Install the new sensor and reconnect the wiring harness.