FAULTBASE
Error CodesASKCars
© 2026 FAULTBASE
All rights reserved.
v2.0.0 • Production
ContactPrivacyImpressum
why is my Toyota Camry Eighth Generation (2018-present) check engine light on - Toyota Camry
Home/Cars/Toyota/Camry/Eighth Generation (2018-present)/why is my Toyota Camry Eighth Generation (2018-present) check engine light on

why is my Toyota Camry Eighth Generation (2018-present) check engine light on

Toyota Camry Eighth Generation (2018-present)

Error Codes
1-3 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
526 words

Problem Statement

Learn how to diagnose and fix the check engine light issue in Toyota Camry (2018-present). Step-by-step guide with symptoms, diagnostic steps, and solutions.

Affected Component
Engine
Estimated Time
1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the battery before working on electrical components.
  • •Allow the engine to cool before performing any inspections or repairs.

Symptoms

  • •Check engine light illuminated
  • •Reduced engine performance or power
  • •Rough idling or stalling
  • •Poor fuel economy
  • •Increased exhaust emissions
  • •Unusual engine noises or vibrations

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •OBD-II scanner
  • •Socket set
  • •Multimeter
  • •Safety glasses

Parts Required

  • •New gas cap (if damaged)
  • •New air filter (if necessary)
  • •New spark plugs (if worn)
  • •New ignition coils (if necessary)

Additional Information

Affected Component
Engine
Estimated Time
1-3 hours
Difficulty
medium
Severity
medium
Tools Required
4 items
Parts Required
4 items

Related Faults

Loading...

Share this solution

Comments

Sign in to share your thoughts

Sign In

No comments yet

Be the first to share your thoughts

Back to Generation
Solution
1. Preparation
  • Gather tools: OBD-II scanner, socket set, multimeter, and safety glasses.
  • Ensure the vehicle is parked on a flat surface, and the engine is cool.
2. Retrieve and Analyze Codes
  • Connect the OBD-II scanner to the vehicle's diagnostic port.
  • Turn the ignition to the "ON" position without starting the engine.
  • Read the trouble codes and note them for further analysis.
3. Inspect and Replace Components

A. Gas Cap

  • Check the gas cap for cracks or damage.
  • If damaged, replace with a new gas cap.

B. Air Filter

  • Remove the air filter cover using the appropriate socket.
  • Inspect the air filter; if it's dirty or clogged, replace with a new one.

C. Spark Plugs and Ignition Coils

  • Remove ignition coil bolts and disconnect the electrical connectors.
  • Take out the spark plugs using a spark plug socket.
  • Inspect the plugs for wear; replace if necessary. Reinstall new plugs with a torque of 13 ft-lbs.
  • Reinstall ignition coils and secure them.
4. Clear Codes
  • After repairs, use the OBD-II scanner to clear the trouble codes.
  • Turn off the ignition and disconnect the scanner.
5. Test Drive
  • Start the engine and monitor for the check engine light.
  • Take the vehicle for a test drive to ensure the issue is resolved.