AutoCodesScion – C1449 Scion

C1449 Scion Code - Master Cylinder Output Value Malfunction

Quick Answer

The Master Cylinder Pressure Sensor is connected to the Skid Control ECU (Brake Actuator Assembly). Common causes include Faulty Brake Actuator Assembly (Master Cylinder Pressure Sensor), Brake Actuator Assembly harness is open or shorted, Brake Actuator Assembly 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
C1449 Scion indicates Master Cylinder Output Value Malfunction.
Common causes
Common causes include Faulty Brake Actuator Assembly (Master Cylinder Pressure Sensor), Brake Actuator Assembly harness is open or shorted, Brake Actuator Assembly 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.
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Code Popularity 225
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 29, 2023
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Code C1449 Scion Description

The Master Cylinder Pressure Sensor is connected to the Skid Control ECU (Brake Actuator Assembly). The Skid Control ECU monitors the Master Cylinder Pressure Sensor. The Skid Control ECU sets the Diagnostic Trouble Code (DTC) when the Master Cylinder Pressure Sensor is not to factory specifications.
OBDII Code C1449 Scion - Master Cylinder Output Value Malfunction - AutoCodes.com
C1449 Scion Code - Master Cylinder Output Value Malfunction

What are the Possible Causes of the DTC C1449 Scion?

  • Faulty Brake Actuator Assembly (Master Cylinder Pressure Sensor)
  • Brake Actuator Assembly harness is open or shorted
  • Brake Actuator Assembly circuit poor electrical connection

How to Fix the DTC C1449 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 C1449 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.

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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 C1449 Scion Code

1. What does the OBDII code C1449 mean on a Scion?

C1449 indicates a "Master Cylinder Output Value Malfunction," meaning there’s an issue with the master cylinder pressure sensor or its related circuitry.

2. What are the common symptoms of code C1449 in a Scion?

Symptoms may include the ABS warning light, reduced braking performance, or erratic braking behavior.

3. What causes the C1449 code to trigger in a Scion?

Common causes include a faulty master cylinder pressure sensor, damaged wiring or connectors, or an ABS module malfunction.

4. Can I drive my Scion with the C1449 code?

It’s not recommended, as the code may indicate compromised braking performance, which could lead to unsafe driving conditions.

5. How do I diagnose the C1449 code on a Scion?

Diagnosis involves checking the master cylinder pressure sensor, inspecting wiring and connectors, and possibly testing the ABS module using a scan tool.

6. How do I fix the C1449 code on my Scion?

Repairs may include replacing the faulty master cylinder pressure sensor, repairing damaged wiring, or recalibrating the ABS module.

7. Does the C1449 code always mean the master cylinder is bad?

No, the issue could be with the sensor, wiring, or ABS module, not necessarily the master cylinder itself.

8. How much does it cost to repair the C1449 code on a Scion?

Costs vary but typically range from $100 to $500, depending on whether the sensor, wiring, or ABS module needs repair or replacement.

9. Can a low brake fluid level cause the C1449 code?

While unlikely, low brake fluid can sometimes contribute to braking system errors, so it’s worth checking.

10. Is it necessary to recalibrate the ABS system after fixing the C1449 code on a Scion?

Yes, recalibration may be required to ensure the ABS system functions correctly after repairs.

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