AutoCodes – Scion – C1252 Scion

C1252 Scion Code - Brake Booster Pump Motor ON Time Abnormally Long

Quick Answer

The Skid Control ECU detects decreases in the accumulator pressure according to the data from the accumulator pressure sensor, and then starts and stops the pump motor by operating the motor relay. Common causes include Faulty Brake Actuator Assembly, 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
C1252 Scion indicates Brake Booster Pump Motor ON Time Abnormally Long.
Common causes
Common causes include Faulty Brake Actuator Assembly, 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 1,006
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 30, 2020
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Code C1252 Scion Description

The Skid Control ECU detects decreases in the accumulator pressure according to the data from the accumulator pressure sensor, and then starts and stops the pump motor by operating the motor relay. The Skid Control ECU usually drives the motor relay 1 for ECB control, and the motor relay 2 for ABS control. If either is malfunctioning, the other substitutes.
OBDII Code C1252 Scion - Brake Booster Pump Motor ON Time Abnormally Long - AutoCodes.com
C1252 Scion Code - Brake Booster Pump Motor ON Time Abnormally Long

What are the Possible Causes of the DTC C1252 Scion?

  • Faulty Brake Actuator Assembly
  • Brake Actuator Assembly harness is open or shorted
  • Brake Actuator Assembly circuit poor electrical connection

How to Fix the DTC C1252 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 C1252 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 C1252 Scion Code

1. What are the common symptoms of OBDII code C1252 in a Scion related to the Brake Booster Pump Motor ON Time Abnormally Long?

- Common symptoms include extended brake pedal travel, decreased braking performance, illuminated ABS and brake warning lights on the dashboard, and unusual noises coming from the brake system.

2. What are the possible causes of OBDII code C1252 in a Scion indicating an abnormally long brake booster pump motor ON time?

- The main causes could be a malfunctioning brake booster pump motor, a faulty brake booster pump relay, wiring issues in the brake booster pump circuit, or a problem with the brake booster pump control module.

3. How can I diagnose the OBDII code C1252 in my Scion related to the brake booster pump motor ON time being abnormally long?

- Diagnosis involves using a scan tool to retrieve the trouble code, checking the brake booster pump motor and relay for proper functioning, inspecting the wiring for any damage, and testing the brake booster pump control module.

4. What are the potential risks of driving with OBDII code C1252 in a Scion indicating an abnormally long brake booster pump motor ON time?

- Driving with this issue may result in compromised braking performance, increased stopping distances, and potential safety hazards due to the brake system not functioning optimally.

5. How can I repair OBDII code C1252 in my Scion associated with the brake booster pump motor ON time being abnormally long?

- The repair process typically involves replacing the faulty brake booster pump motor, fixing any wiring issues, replacing the brake booster pump relay if necessary, or repairing/replacing the brake booster pump control module.

6. Is it safe to continue driving my Scion with the ABS and brake warning lights illuminated due to OBDII code C1252?

- It is not recommended to drive the vehicle with illuminated warning lights related to brake system malfunctions, as it can compromise your safety on the road. Immediate attention and repair are advised.

7. Can OBDII code C1252 in a Scion be triggered by a low brake fluid level?

- While low brake fluid level itself may not directly trigger this specific code, it can lead to other brake system issues that may contribute to the abnormal ON time of the brake booster pump motor.

8. How can I prevent OBDII code C1252 from recurring in my Scion after repairs have been made?

- Regular maintenance of the brake system, including checking brake fluid levels, ensuring proper brake booster pump motor function, and addressing any warning lights promptly, can help prevent the code from recurring.

9. Are there any DIY methods to troubleshoot OBDII code C1252 in a Scion before seeking professional help?

- DIY methods may include visually inspecting the brake booster pump motor and relay, checking for loose or damaged wiring, and ensuring proper brake fluid levels. However, detailed diagnosis and repair may require professional expertise.

10. How long does it typically take to repair OBDII code C1252 in a Scion at a professional auto repair shop?

- The repair time can vary depending on the exact cause of the issue, availability of parts, and the shop's workload. On average, it may take a few hours to a full day to diagnose and repair the problem related to this specific OBDII code.

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