how to fix check engine light on Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

509 words

Problem Statement

Learn how to diagnose and fix the check engine light issue on Toyota Corolla E170 (2013-2019). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Engine

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems.
•Allow the engine to cool before handling components in the engine bay.

Symptoms

•Check engine light illuminated
•Decreased fuel efficiency
•Rough engine idle
•Engine stalling or hesitation during acceleration
•Increased emissions

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific issues.
2
Review the error codes and note any pending or historical codes for further investigation.
3
Inspect the gas cap for proper sealing; replace if it is cracked or not sealing correctly.
4
Check for visible signs of issues in the engine bay, including loose or damaged hoses and electrical connections.
5
Measure fuel pressure using a fuel pressure gauge to verify fuel delivery system integrity.
6
Inspect the air filter and intake system for blockages or leaks.

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
•Fuel pressure gauge
•Torque wrench

Parts Required

•Oxygen sensor (if faulty)
•Air filter (if dirty)
•Fuel filter (if clogged)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Scan for error codes using an OBD-II scanner to identify specific issues.
2
Review the error codes and note any pending or historical codes for further investigation.
3
Inspect the gas cap for proper sealing; replace if it is cracked or not sealing correctly.
4
Check for visible signs of issues in the engine bay, including loose or damaged hoses and electrical connections.
5
Measure fuel pressure using a fuel pressure gauge to verify fuel delivery system integrity.
6
Inspect the air filter and intake system for blockages or leaks.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the battery to ensure safety while working on electrical components.
Tools Required: OBD-II scanner, socket set, multimeter, fuel pressure gauge, torque wrench.

2. Address Error Codes

Review the error codes retrieved from the OBD-II scanner.
If the code indicates a specific component failure (e.g., oxygen sensor, mass airflow sensor), proceed to replace that component.
Tools Required: Specific to the component being replaced (e.g., socket set, special tools for sensors).

3. Replace Faulty Components

For example, if the oxygen sensor is faulty:
- Locate the oxygen sensor, usually situated in the exhaust system.
- Unplug the sensor's electrical connector.
- Use a socket to remove the oxygen sensor.
- Install the new sensor and torque to specifications (typically around 30 lb-ft).
- Reconnect the electrical connector.

4. Clear Error Codes

Reconnect the battery and use the OBD-II scanner to clear the error codes.
Start the engine and let it idle for a few minutes to ensure the check engine light remains off.

5. Test Drive

Conduct a test drive to ensure the engine operates smoothly and the check engine light does not reappear.