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Engine-Codes – Toyota – C1247 Toyota

C1247 Toyota Code - Malfunction In Stroke Sensor

Quick Answer

The C1247 code for Toyota indicates a malfunction in the stroke sensor, which is a crucial component of the vehicle's braking system. Common causes include Faulty stroke sensor wiring or connectors, Failed stroke sensor itself, Corrosion or damage to the sensor due to moisture or debris. 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
C1247 Toyota indicates Malfunction In Stroke Sensor.
Common causes
Common causes include Faulty stroke sensor wiring or connectors, Failed stroke sensor itself, Corrosion or damage to the sensor due to moisture or debris.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code C1247 Toyota Description

The C1247 code for Toyota indicates a malfunction in the stroke sensor, which is a crucial component of the vehicle's braking system. The stroke sensor is responsible for measuring the stroke length of the brake pedal when it is depressed, allowing the system to appropriately adjust the braking force applied. When this sensor malfunctions, it can lead to erratic braking behavior, reduced braking performance, or even complete brake failure in extreme cases. This issue can compromise the vehicle's safety and should be addressed promptly.

OBDII Code C1247 Toyota - Malfunction In Stroke Sensor
C1247 Toyota Code - Malfunction In Stroke Sensor

Common Causes of C1247 Toyota

  1. Faulty stroke sensor wiring or connectors.
  2. Failed stroke sensor itself.
  3. Corrosion or damage to the sensor due to moisture or debris.
  4. Issues with the ABS module or related components.
  5. Electrical issues such as short circuits or power supply problems.

Symptoms of C1247 Toyota

  1. Illumination of the ABS warning light on the dashboard.
  2. Increased stopping distance when applying the brakes.
  3. Brakes feel spongy or unresponsive.
  4. ABS system engages unexpectedly during normal driving.
  5. Brake pedal feels hard or soft when depressed.

How to Fix C1247 Toyota

  1. Begin by diagnosing the exact cause of the malfunction using a scan tool to read the error code and inspecting the stroke sensor and related components.
  2. Replace the faulty stroke sensor if it is determined to be the root cause of the issue.
  3. Check and repair any damaged wiring or connectors associated with the stroke sensor.
  4. Clear the error code from the vehicle's computer system and test drive the vehicle to ensure the issue has been resolved.
  5. Perform a brake system inspection and test to verify that the braking performance is restored to normal.

Cost to Fix C1247 Toyota

The cost of repairing a malfunction in the stroke sensor (C1247) for a Toyota can vary depending on the specific cause of the issue and the labor rates in your area. Typically, the cost of replacing a stroke sensor ranges from $150 to $300, not including labor costs. The total repair cost including parts and labor could range from $200 to $500. It's important to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on your vehicle's make and model. Labor rates can vary, so it's advisable to shop around for the best deal.

What does this mean?

Tech Notes for C1247 Toyota

Some 2004-2009 model year Prius vehicles may exhibit a MIL "ON" and brake warning lights (ABS/VSC) illuminated in the instrument panel with Diagnostic Trouble Code (DTC) C1247 (Stroke Sensor Malfunction) stored in the ABS/VSC Electronic Control Unit (ECU). This DTC may set as a result of an overly sensitive monitoring logic without any other ABS/VSC system issue. If necessary, replace the ABS/VSC ECU with an ECU containing the updated monitoring logic.

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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 C1247 Toyota Code

1. What are the common symptoms of OBDII code C1247 Toyota (Malfunction In Stroke Sensor)?

- Common symptoms include the ABS warning light illuminating on the dashboard, loss of traction control, and potential difficulty braking.

2. What could cause the OBDII code C1247 Toyota to trigger?

- The code may be triggered by a faulty stroke sensor, damaged wiring or connectors, or issues with the ABS hydraulic unit.

3. How can I diagnose the cause of OBDII code C1247 Toyota?

- Diagnosing the issue typically involves using a diagnostic scan tool to read the code, inspecting the stroke sensor and related components, and testing the wiring and connectors for any faults.

4. What are the potential repair options for resolving OBDII code C1247 Toyota?

- Repair options may include replacing the stroke sensor, repairing or replacing damaged wiring or connectors, or addressing any issues with the ABS hydraulic unit.

5. Can I drive my vehicle with OBDII code C1247 Toyota active?

- It is generally not recommended to drive with this code active, as it can affect the proper functioning of the ABS system and traction control, potentially compromising safety.

6. How much does it typically cost to repair OBDII code C1247 Toyota?

- Repair costs can vary depending on the specific issue causing the code, but they may range from $200 to $500 or more, including parts and labor.

7. Is it possible to reset OBDII code C1247 Toyota without making any repairs?

- While clearing the code with a diagnostic scan tool may temporarily turn off the warning light, it is important to address the underlying issue to prevent further problems.

8. Are there any preventive maintenance tips to avoid OBDII code C1247 Toyota?

- Regularly inspecting the ABS system, checking for any signs of wear or damage, and addressing any issues promptly can help prevent the code from triggering.

9. How long does it take to repair OBDII code C1247 Toyota?

- The repair time can vary depending on the specific issue and the expertise of the technician, but it may take a few hours to half a day to complete the repair.

10. Can I fix OBDII code C1247 Toyota myself, or do I need a professional mechanic?

- The complexity of the repair and the need for specialized tools and expertise often make it advisable to seek the help of a professional mechanic to address OBDII code C1247 Toyota effectively.

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