AutoCodes – Scion – C1246 Scion

C1246 Scion Code - Master Cylinder Pressure Sensor Malfunction

Quick Answer

The Master Cylinder Pressure Sensor and the Wheel Cylinder Pressure Sensor are built into the Brake Actuator. Common causes include Faulty Skid Control ECU or Brake Actuator, Skid Control ECU or Brake Actuator harness is open or shorted, Skid Control ECU or Brake Actuator circuit poor electrical connection. 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
C1246 Scion indicates Master Cylinder Pressure Sensor Malfunction.
Common causes
Common causes include Faulty Skid Control ECU or Brake Actuator, Skid Control ECU or Brake Actuator harness is open or shorted, Skid Control ECU or Brake Actuator circuit poor electrical connection.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,882
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 20, 2020
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Code C1246 Scion Description

The Master Cylinder Pressure Sensor and the Wheel Cylinder Pressure Sensor are built into the Brake Actuator. The Skid Control ECU or Brake Actuator monitors the Wheel Cylinder Pressure Sensor. The Skid Control ECU sets the OBDII code when the Wheel Cylinder Pressure Sensor is not to factory specifications.
OBDII Code C1246 Scion - Master Cylinder Pressure Sensor Malfunction - AutoCodes.com
C1246 Scion Code - Master Cylinder Pressure Sensor Malfunction

What are the Possible Causes of the DTC C1246 Scion?

  • Faulty Skid Control ECU or Brake Actuator
  • Skid Control ECU or Brake Actuator harness is open or shorted
  • Skid Control ECU or Brake Actuator circuit poor electrical connection

How to Fix the DTC C1246 Scion?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C1246 Scion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the C1246 Scion code?

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Need Help with the Code?

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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 C1246 Scion Code

1. What are common symptoms of OBDII code C1246 in a Scion related to the master cylinder pressure sensor malfunction?

The common symptoms include the illumination of the "Check Engine" light on the dashboard, decreased brake performance, and potential issues with the vehicle's stability control system.

2. What are possible causes of the C1246 OBDII code in a Scion indicating a master cylinder pressure sensor malfunction?

Common causes of this code include a faulty master cylinder pressure sensor, damaged wiring or connectors in the sensor circuit, low brake fluid levels, or a malfunctioning brake hydraulic system.

3. How can I diagnose the C1246 code in my Scion due to a master cylinder pressure sensor issue?

To diagnose this issue, you can use an OBDII scanner to retrieve the specific fault code, visually inspect the wiring and connectors related to the master cylinder pressure sensor, and test the sensor's functionality using a multimeter.

4. Can I still drive my Scion with the C1246 OBDII code indicating a master cylinder pressure sensor malfunction?

It is not recommended to continue driving your Scion with this code as it may lead to brake performance issues and compromise your safety on the road. It is advisable to address the problem promptly.

5. How can I repair the C1246 OBDII code related to the master cylinder pressure sensor malfunction in my Scion?

Repair options may include replacing the faulty master cylinder pressure sensor, repairing damaged wiring or connectors, ensuring proper brake fluid levels, and addressing any other underlying issues in the brake hydraulic system.

6. Is it possible to reset the C1246 OBDII code in my Scion without addressing the master cylinder pressure sensor problem?

While you can clear the fault code using an OBDII scanner, it is crucial to address the root cause of the issue to prevent it from recurring and potentially causing safety concerns while driving.

7. Are there any specific maintenance tips to prevent the C1246 OBDII code from recurring in my Scion?

Regularly checking and maintaining proper brake fluid levels, inspecting the brake system for leaks or damage, and ensuring the master cylinder pressure sensor is functioning correctly can help prevent the recurrence of this code.

8. Can a DIY enthusiast with basic automotive knowledge repair the C1246 OBDII code related to the master cylinder pressure sensor in a Scion?

While some repairs related to this code can be done by DIY enthusiasts, it is recommended to have a professional mechanic diagnose and address the issue, especially when it involves the brake system and safety components.

9. How long does it typically take to repair the C1246 OBDII code caused by a master cylinder pressure sensor malfunction in a Scion?

The repair time can vary depending on the exact cause of the issue and the complexity of the repair needed. It is advisable to consult a mechanic for a more accurate estimate of the repair duration.

10. Can the C1246 OBDII code in a Scion indicating a master cylinder pressure sensor malfunction affect other systems in the vehicle?

Yes, a malfunctioning master cylinder pressure sensor can impact the vehicle's stability control system, anti-lock braking system (ABS), and overall brake performance, highlighting the importance of addressing this issue promptly.

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