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Engine-Codes – Generic – P1912

P1912 Code - Brake Servo Pressure Sensor Open Circuit/Short To Positive

Quick Answer

The P1912 diagnostic trouble code indicates that there is an open circuit or a short to positive in the brake servo pressure sensor circuit. Common causes include Faulty brake servo pressure sensor, Wiring issues such as damaged wires, loose connections, or corrosion, Short to positive in the brake servo pressure 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
P1912 indicates Brake Servo Pressure Sensor Open Circuit/Short To Positive.
Common causes
Common causes include Faulty brake servo pressure sensor, Wiring issues such as damaged wires, loose connections, or corrosion, Short to positive in the brake servo pressure 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 07, 2024
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Code P1912 Description

The P1912 diagnostic trouble code indicates that there is an open circuit or a short to positive in the brake servo pressure sensor circuit. The brake servo pressure sensor is a crucial component of the vehicle's braking system that measures the pressure applied to the brake pedal. This information is used by the vehicle's electronic control unit (ECU) to determine the appropriate amount of braking force to apply to the wheels.

OBDII Code P1912 - Brake Servo Pressure Sensor Open Circuit/Short To Positive
P1912 Code - Brake Servo Pressure Sensor Open Circuit/Short To Positive

Common Causes of P1912

  1. Faulty brake servo pressure sensor
  2. Wiring issues such as damaged wires, loose connections, or corrosion
  3. Short to positive in the brake servo pressure sensor circuit
  4. Issues with the ECU or other related electronic components
  5. Previous water damage or exposure leading to sensor malfunction

Symptoms of P1912

  1. Illumination of the "Brake" warning light on the dashboard
  2. Reduced braking performance or increased brake pedal effort required
  3. Erratic or inconsistent braking behavior
  4. ABS (Anti-lock Braking System) malfunction or activation
  5. Loss of power assistance in the braking system

How to Fix P1912

  1. Begin by performing a visual inspection of the brake servo pressure sensor and its wiring harness. Look for any visible damage, corrosion, or loose connections. Repair or replace any damaged components.
  2. Use a multimeter to test the continuity of the sensor circuit and check for any shorts to positive. Repair or replace any faulty wiring.
  3. Test the brake servo pressure sensor itself using a scan tool to ensure it is functioning properly. Replace the sensor if necessary.
  4. Clear the diagnostic trouble codes from the vehicle's ECU using a scan tool and test drive the vehicle to verify that the issue has been resolved.
  5. If the problem persists, further diagnosis may be required to pinpoint the exact cause of the open circuit or short to positive in the brake servo pressure sensor circuit.

Cost to Fix P1912

The cost of repairing a P1912 code can vary depending on the specific cause of the issue and the make and model of the vehicle. In general, the replacement of a brake servo pressure sensor can range from $100 to $300, including parts and labor. Additional costs may be incurred for any necessary wiring repairs or diagnostic work. As labor rates at auto repair shops typically range from $80 to $150 per hour, the total repair cost can vary significantly. It is recommended to consult with a professional mechanic to get a more accurate estimate based on the specific circumstances of the vehicle.

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Code P1912 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 P1912 Code

1. What are the common symptoms of OBDII code P1912 (Brake Servo Pressure Sensor Open Circuit/Short To Positive)?

- Common symptoms include a loss of power brake assistance, illuminated brake warning light on the dashboard, and potential issues with the vehicle's brake system.

2. What are the possible causes of OBDII code P1912?

- The code P1912 can be caused by a faulty brake servo pressure sensor, damaged wiring or connectors in the sensor circuit, or a short circuit to positive in the sensor circuit.

3. How can I diagnose the issue related to OBDII code P1912?

- To diagnose the issue, you can use a scan tool to read the code, visually inspect the sensor and its wiring for any visible damage, and perform electrical tests to check for continuity and shorts in the sensor circuit.

4. What are the implications of driving with OBDII code P1912 active?

- Driving with code P1912 can lead to reduced brake performance and safety risks due to the potential loss of power brake assistance. It is recommended to address the issue promptly.

5. How can I repair OBDII code P1912 (Brake Servo Pressure Sensor Open Circuit/Short To Positive)?

- Repairing the code P1912 may involve replacing the faulty brake servo pressure sensor, repairing or replacing damaged wiring or connectors in the sensor circuit, and clearing the code with a scan tool.

6. Can I reset the OBDII code P1912 without fixing the underlying issue?

- While you can clear the code temporarily with a scan tool, it is essential to address the root cause of the problem to ensure the safety and proper functionality of the vehicle's brake system.

7. Is it safe to drive the vehicle to a repair shop with OBDII code P1912 active?

- It is not recommended to drive the vehicle with code P1912 active, as it can compromise the effectiveness of the brake system. It is advisable to have the issue diagnosed and repaired before driving the vehicle.

8. Will OBDII code P1912 cause the vehicle to fail an emissions test?

- The code P1912 is related to the brake system and is not directly linked to emissions. However, it is still important to address the issue to ensure the overall safety and performance of the vehicle.

9. Can weather conditions affect the triggering of OBDII code P1912?

- Extreme weather conditions or water exposure can potentially damage the brake servo pressure sensor or its circuit, leading to the triggering of code P1912. It is essential to keep the sensor and its connections protected.

10. Is it possible to prevent OBDII code P1912 from recurring in the future?

- Regular maintenance of the brake system, including inspecting and cleaning the brake servo pressure sensor and its connections, can help prevent the recurrence of OBDII code P1912.

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