Engine-CodesScion – C1420 Scion

C1420 Scion Code - Acceleration Sensor Malfunction

Quick Answer

The C1420 diagnostic trouble code (DTC) for Scion vehicles indicates a malfunction in the acceleration sensor. Common causes include Faulty acceleration sensor, Wiring or connection issues in the acceleration sensor circuit, Corrosion or damage to the sensor's connectors. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
C1420 Scion indicates Acceleration Sensor Malfunction.
Common causes
Common causes include Faulty acceleration sensor, Wiring or connection issues in the acceleration sensor circuit, Corrosion or damage to the sensor's connectors.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 19, 2024
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Code C1420 Scion Description

The C1420 diagnostic trouble code (DTC) for Scion vehicles indicates a malfunction in the acceleration sensor. The acceleration sensor is a crucial component of the vehicle's stability control system, as it measures the rate of acceleration and deceleration of the vehicle. This information is used by the vehicle's electronic control unit (ECU) to adjust braking and engine power to maintain stability and control during acceleration and braking.

OBDII Code C1420 Scion -  Acceleration Sensor Malfunction
C1420 Scion Code - Acceleration Sensor Malfunction

Common Causes of C1420 Scion

  1. Faulty acceleration sensor
  2. Wiring or connection issues in the acceleration sensor circuit
  3. Corrosion or damage to the sensor's connectors
  4. Electronic control unit (ECU) malfunction affecting the sensor readings

Symptoms of C1420 Scion

  1. Loss of traction control functionality
  2. Increased difficulty maintaining control during acceleration and braking
  3. Illumination of the traction control or stability control warning light on the dashboard
  4. Erratic behavior of the vehicle during sudden acceleration or braking

How to Fix C1420 Scion

  1. Diagnose the issue by connecting a diagnostic scanner to retrieve the specific error codes and sensor data.
  2. Inspect the wiring and connections of the acceleration sensor for any signs of damage or corrosion.
  3. Test the sensor's functionality using a multimeter to check for proper voltage and resistance readings.
  4. Replace the acceleration sensor if it is determined to be faulty or malfunctioning.
  5. Clear the error codes and perform a test drive to ensure the issue has been resolved.

Cost to Fix C1420 Scion

The cost of repairing a malfunctioning acceleration sensor can vary depending on the specific make and model of the vehicle, as well as the labor rates in your area. On average, the cost of replacing an acceleration sensor ranges from $150 to $300 for the part alone. Labor costs can add an additional $100 to $200, bringing the total repair cost to around $250 to $500. It's important to note that these are rough estimates, and actual costs may vary based on individual circumstances. It's recommended to consult with a qualified mechanic or auto repair shop for a more accurate cost estimate.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about C1420 Scion Code

1. What are common symptoms of an acceleration sensor malfunction (OBDII code C1420) in a Scion?

- Common symptoms include issues with acceleration responsiveness, unstable driving behavior, and potential traction control system malfunctions.

2. What could cause the acceleration sensor malfunction code C1420 in a Scion?

- The code C1420 in a Scion is typically caused by a faulty acceleration sensor, damaged wiring harness, or issues with the sensor's calibration.

3. How can I diagnose the acceleration sensor malfunction in my Scion?

- Diagnosing the acceleration sensor malfunction involves using a scan tool to retrieve the OBDII code C1420, inspecting the sensor and its wiring for damage, and testing the sensor's functionality.

4. Can I repair the acceleration sensor malfunction in my Scion myself?

- While some basic troubleshooting steps can be done by DIY enthusiasts, repairing the acceleration sensor malfunction usually requires specialized tools and expertise, making it advisable to seek professional help.

5. Are there any temporary fixes for the acceleration sensor malfunction code C1420 in a Scion?

- There are no recommended temporary fixes for the acceleration sensor malfunction code C1420, as addressing the underlying issue promptly is crucial for safe driving.

6. How much does it cost to repair the acceleration sensor malfunction in a Scion?

- The cost of repairing the acceleration sensor malfunction can vary depending on the extent of the issue, but it typically involves sensor replacement and can range from a few hundred to over a thousand dollars.

7. Can driving with the acceleration sensor malfunction code C1420 damage my Scion?

- Continuing to drive with the acceleration sensor malfunction can potentially lead to safety risks, as it may affect the vehicle's stability control system and overall driving performance.

8. How long does it take to repair the acceleration sensor malfunction in a Scion?

- The repair time for the acceleration sensor malfunction can vary depending on the exact cause and the availability of parts, but it may take a few hours to a day for a professional technician to complete the repair.

9. Will resetting the OBDII code C1420 make the acceleration sensor malfunction disappear?

- Resetting the OBDII code C1420 may temporarily clear the error code, but if the underlying issue causing the acceleration sensor malfunction is not addressed, the code is likely to reappear.

10. Can extreme weather conditions trigger the acceleration sensor malfunction in a Scion?

- Extreme weather conditions, such as excessive heat or moisture, can potentially impact the performance of the acceleration sensor and contribute to triggering the malfunction code C1420.

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