C1252 Lexus Code - Brake Booster Pump Motor ON Time Abnormally Long
Quick Answer
When the diagnostic trouble code C1252 appears on a Lexus vehicle, it indicates that the brake booster pump motor has been running for an abnormally long time. Common causes include Malfunctioning brake booster pump motor: A faulty motor may run continuously, leading to the code C1252, Faulty brake booster pump motor relay: A defective relay can cause the motor to stay on longer than necessary, Wiring issues: Damaged or corroded wiring connections can disrupt the communication between components, resulting in prolonged motor operation. 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 Lexus indicates Brake Booster Pump Motor ON Time Abnormally Long.
- Common causes
- Common causes include Malfunctioning brake booster pump motor: A faulty motor may run continuously, leading to the code C1252, Faulty brake booster pump motor relay: A defective relay can cause the motor to stay on longer than necessary, Wiring issues: Damaged or corroded wiring connections can disrupt the communication between components, resulting in prolonged motor operation.
- 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 C1252 Lexus Description
When the diagnostic trouble code C1252 appears on a Lexus vehicle, it indicates that the brake booster pump motor has been running for an abnormally long time. The brake booster pump motor is responsible for assisting the brake system by maintaining proper brake pressure. When the ON time of the motor is longer than expected, it can lead to various issues with the brake system's performance.
Common Causes of C1252 Lexus
- Malfunctioning brake booster pump motor: A faulty motor may run continuously, leading to the code C1252.
- Faulty brake booster pump motor relay: A defective relay can cause the motor to stay on longer than necessary.
- Wiring issues: Damaged or corroded wiring connections can disrupt the communication between components, resulting in prolonged motor operation.
- Brake booster pump motor control module failure: A malfunctioning control module may not properly regulate the motor's operation, causing it to run abnormally long.
Symptoms of C1252 Lexus
- Increased stopping distance: Due to decreased brake pressure, the vehicle may require a longer distance to come to a complete stop.
- Brake pedal feels spongy: The brake pedal may feel soft or spongy when pressed, indicating a loss of brake pressure.
- Illuminated brake warning light: The brake warning light on the dashboard may illuminate to indicate a problem with the brake system.
- Unusual noise: The brake booster pump motor running for an extended period may produce unusual noises, such as humming or whirring sounds.
How to Fix C1252 Lexus
- Diagnose the issue: Use a diagnostic tool to pinpoint the exact cause of the problem, whether it's a faulty motor, relay, wiring, or control module.
- Replace the brake booster pump motor: If the motor is the culprit, replace it with a new one to restore proper brake system function.
- Check and repair wiring: Inspect the wiring connections for any damage or corrosion, and repair or replace as needed to ensure proper communication between components.
- Replace the brake booster pump motor relay: If the relay is faulty, install a new one to prevent the motor from running excessively.
- Reset the system: After completing the repairs, reset the system and clear the diagnostic trouble code to ensure the issue has been resolved.
Cost to Fix C1252 Lexus
The cost of repairing the C1252 code on a Lexus vehicle can vary depending on the specific cause of the issue and the cost of parts and labor. Typically, the cost of replacing a brake booster pump motor can range from $300 to $600, while replacing a relay or repairing wiring may cost between $50 and $200. The total cost, including parts and labor, can range from $400 to $1000 or more. It's important to note that labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Additionally, the specific diagnosis time and labor rates at different locations, such as dealerships or independent shops, can impact the overall repair cost. It's advisable to obtain quotes from multiple sources to get a more accurate estimate for repairing the C1252 code on a Lexus vehicle.
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Frequently Asked Questions about C1252 Lexus Code
1. What does OBDII code C1252 mean on a Lexus?
C1252 indicates that the brake booster pump motor is taking too long to run, suggesting a potential issue with the brake booster system.
2. What are the common symptoms of code C1252 in a Lexus?
Symptoms may include a warning light on the dashboard, reduced braking performance, unusual noises from the brake booster, or a spongy brake pedal feel.
3. What causes the C1252 code to appear?
Common causes include a failing brake booster pump motor, leaks in the brake booster system, a clogged brake fluid line, or a faulty pressure sensor.
4. Can I still drive my Lexus with a C1252 code?
It’s not recommended, as the code indicates a potential braking issue that could compromise safety. Have the vehicle inspected and repaired promptly.
5. How is the C1252 code diagnosed on a Lexus?
A technician will use a scan tool to confirm the code, inspect the brake booster pump motor, check for leaks, and test the brake system pressure.
6. How do you fix the C1252 code on a Lexus?
Repairs may involve replacing the brake booster pump motor, fixing leaks, flushing the brake fluid, or replacing a faulty pressure sensor.
7. What is the cost of repairing a C1252 code on a Lexus?
Costs vary depending on the exact issue but typically range from $300 to $1,000, including parts and labor.
8. Can a brake fluid issue trigger the C1252 code?
Yes, low or contaminated brake fluid can cause the brake booster pump motor to run longer than normal, triggering the code.
9. Does the C1252 code mean the brake booster pump motor is failing?
Not always. While it’s a common cause, the issue could also be due to leaks, sensor failures, or fluid problems in the brake booster system.
10. Can I fix the C1252 code on my Lexus myself?
If you have experience working with brake systems, you can attempt basic troubleshooting like checking for leaks and brake fluid levels. However, most repairs for this code require professional expertise.
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