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Engine-Codes – Generic – C1953

C1953 Code - Brake Master Cylinder Pressure Sensor Circuit Open

Quick Answer

The diagnostic trouble code C1953 indicates a problem with the Brake Master Cylinder Pressure Sensor Circuit being open. Common causes include Faulty brake master cylinder pressure sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or poor connections in the sensor circuit. 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
C1953 indicates Brake Master Cylinder Pressure Sensor Circuit Open.
Common causes
Common causes include Faulty brake master cylinder pressure sensor, Damaged wiring or connectors in the sensor circuit, Corrosion or poor connections in the sensor circuit.
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 Sep 10, 2024
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Code C1953 Description

The diagnostic trouble code C1953 indicates a problem with the Brake Master Cylinder Pressure Sensor Circuit being open. The brake master cylinder pressure sensor is a crucial component of the vehicle's brake system, responsible for monitoring the hydraulic pressure in the braking system. When this sensor circuit is open, it means that there is an interruption in the electrical connection between the sensor and the vehicle's electronic control unit (ECU).

OBDII Code C1953 - Brake Master Cylinder Pressure Sensor Circuit Open
C1953 Code - Brake Master Cylinder Pressure Sensor Circuit Open

Common Causes of C1953

  1. Faulty brake master cylinder pressure sensor
  2. Damaged wiring or connectors in the sensor circuit
  3. Corrosion or poor connections in the sensor circuit
  4. Issues with the ECU or other related components
  5. Electrical issues such as a blown fuse or relay in the brake system circuit

Symptoms of C1953

  1. Illuminated brake warning light on the dashboard
  2. Decreased brake performance or responsiveness
  3. Increased stopping distances
  4. ABS system malfunctions
  5. Loss of brake assist functionality

How to Fix C1953

  1. Begin by conducting a visual inspection of the brake master cylinder pressure sensor and its wiring harness for any visible damage or corrosion.
  2. Test the sensor using a multimeter to check for proper resistance and voltage readings.
  3. Inspect and clean the sensor connectors to ensure a secure connection.
  4. Replace the brake master cylinder pressure sensor if it is found to be faulty or damaged.
  5. Clear the diagnostic trouble codes from the ECU using a scan tool and perform a test drive to verify that the issue has been resolved.

Cost to Fix C1953

The cost of repairing a Brake Master Cylinder Pressure Sensor Circuit Open issue can vary depending on the specific cause of the problem and the need for parts replacement. On average, the cost of replacing a brake master cylinder pressure sensor can range from $150 to $300, including parts and labor. Additional costs may apply if there are other underlying issues that need to be addressed. It is recommended to consult with a professional mechanic to get an accurate estimate based on the specific circumstances of your vehicle.

What does this mean?

Tech Notes for C1953

The C1954 code indicates a problem with the Brake Master Cylinder Pressure Sensor, located on the Brake Master Cylinder. Sometimes, the issue is simply low brake fluid. Before replacing any parts, ensure the brake fluid at the Brake Master Cylinder is at the correct level.

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Code C1953 Information for Specific Makes

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 C1953 Code

1. What are common symptoms of OBDII code C1953 (Brake Master Cylinder Pressure Sensor Circuit Open)?

- Common symptoms include the illumination of the Check Engine light, loss of brake pressure, and potential issues with the vehicle's braking system.

2. What are possible causes of OBDII code C1953?

- Possible causes include a faulty brake master cylinder pressure sensor, damaged wiring or connectors in the sensor circuit, or issues with the sensor's power supply.

3. How can I diagnose OBDII code C1953?

- Diagnosing this code typically involves using a scan tool to retrieve the code, inspecting the brake master cylinder pressure sensor and its connections, and checking for any visible damage or corrosion.

4. Can I continue driving with OBDII code C1953 present?

- It is not recommended to continue driving with this code present, as it may compromise the vehicle's braking performance and safety. It is advisable to address the issue promptly.

5. Is it safe to reset the OBDII code C1953 without repairs?

- While resetting the code may temporarily turn off the Check Engine light, it will not fix the underlying issue causing the code. It is important to diagnose and repair the problem to ensure safe operation of the vehicle.

6. How can I repair OBDII code C1953?

- Repairing this code typically involves replacing the faulty brake master cylinder pressure sensor, repairing damaged wiring or connectors, or addressing any power supply issues related to the sensor.

7. Can a DIY enthusiast fix OBDII code C1953 at home?

- Depending on the level of expertise, a DIY enthusiast may be able to diagnose and fix this code at home by following repair guides, using appropriate tools, and ensuring safety precautions are taken.

8. What are the potential risks of ignoring OBDII code C1953?

- Ignoring this code can lead to brake system malfunctions, compromised braking performance, and safety hazards while driving. It is crucial to address the issue promptly.

9. How much does it cost to repair OBDII code C1953 at a repair shop?

- Repair costs for this code can vary depending on the specific cause of the issue, but it may involve sensor replacement, wiring repairs, and labor costs. It is advisable to consult a professional for an accurate estimate.

10. Can weather conditions affect OBDII code C1953?

- Extreme weather conditions, such as exposure to moisture or extreme temperatures, can potentially impact the brake master cylinder pressure sensor circuit and contribute to the occurrence of this code.

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