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how to fix a faulty throttle position sensor in my Toyota Corolla E170 (2013-2019) - Toyota Corolla
Home/Cars/Toyota/Corolla/E170 (2013-2019)/how to fix a faulty throttle position sensor in my Toyota Corolla E170 (2013-2019)

how to fix a faulty throttle position sensor in my Toyota Corolla E170 (2013-2019)

Toyota Corolla E170 (2013-2019)

Error Codes
1-2 hours
Time
medium
Difficulty
high
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
458 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix a faulty throttle position sensor in your 2013-2019 Toyota Corolla E170. Step-by-step guide with symptoms and solutions.

Affected Component
Engine
Estimated Time
1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect the battery before working on electrical systems.
  • •Allow engine to cool before working on the throttle body.

Symptoms

  • •Check engine light illuminated
  • •Unresponsive or erratic acceleration
  • •Engine stalling or rough idling
  • •Poor fuel economy
  • •Increased emissions

Diagnostic Steps

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

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
  • •Multimeter
  • •Socket set
  • •Throttle body cleaner
  • •Soft cloth

Parts Required

  • •New throttle position sensor

Additional Information

Affected Component
Engine
Estimated Time
1-2 hours
Difficulty
medium
Severity
high
Tools Required
5 items
Parts Required
1 item

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Solution
1. Preparation
  • Gather tools and replacement parts.
  • Disconnect the negative battery terminal to prevent electrical shorts.
  • Allow the engine to cool if it has been running.
2. Remove the Throttle Position Sensor
  • Locate the throttle position sensor on the throttle body.
  • Disconnect the electrical connector from the TPS by pressing the tab and pulling it off.
  • Remove the mounting screws holding the TPS using a socket set.
  • Carefully pull the TPS off the throttle body.
3. Inspect and Clean
  • Inspect the throttle body for any carbon buildup or debris.
  • Use throttle body cleaner and a soft cloth to clean the throttle plate and surrounding area.
  • Check the old TPS for any visible damage or wear.
4. Install New Throttle Position Sensor
  • Position the new TPS onto the throttle body.
  • Secure it in place with the mounting screws, torqueing them to the manufacturer's specifications (typically around 7 ft-lbs).
  • Reconnect the electrical connector to the TPS until it clicks into place.
5. Reconnect Battery and Test
  • Reconnect the negative battery terminal.
  • Start the engine and allow it to idle. Check for any abnormal sounds or behaviors.