AutoCodes – Lexus – C1202 Lexus

C1202 Lexus Code - Master Reservoir Level Malfunction

Quick Answer

When a fluid level drop in the brake master cylinder reservoir assembly is detected, a signal is sent to the skid control ECU. Common causes include Low brake fluid level, Brake fluid leaks, Faulty Brake fluid level warning switch (Brake master cylinder reservoir assembly). 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
C1202 Lexus indicates Master Reservoir Level Malfunction.
Common causes
Common causes include Low brake fluid level, Brake fluid leaks, Faulty Brake fluid level warning switch (Brake master cylinder reservoir assembly).
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 13,009
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 21, 2020
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Code C1202 Lexus Description

When a fluid level drop in the brake master cylinder reservoir assembly is detected, a signal is sent to the skid control ECU.
If the DTC for the fluid level drop is memorized, the warning will be canceled and the DTC will not be stored when the fluid level returns to normal.
OBDII Code C1202 Lexus - Master Reservoir Level Malfunction - AutoCodes.com
C1202 Lexus Code - Master Reservoir Level Malfunction

What are the Possible Causes of the DTC C1202 Lexus?

  • Low brake fluid level
  • Brake fluid leaks
  • Faulty Brake fluid level warning switch (Brake master cylinder reservoir assembly)
  • Brake fluid level warning switch harness is open or shorted
  • Brake fluid level warning switch circuit poor electrical connection

How to Fix the DTC C1202 Lexus?

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 C1202 Lexus 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.

Need more information about the C1202 Lexus code?

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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 C1202 Lexus Code

1. What are the common symptoms of OBDII code C1202 in a Lexus related to the Master Reservoir Level Malfunction?

The common symptoms include the illumination of the check engine light, a message indicating low brake fluid level, and potentially reduced brake performance.

2. What are the possible causes of the C1202 OBDII code indicating a Master Reservoir Level Malfunction in a Lexus?

Possible causes include a faulty brake fluid level sensor, a wiring issue in the sensor circuit, low brake fluid level, or a malfunctioning brake fluid reservoir.

3. How can I diagnose the C1202 OBDII code related to the Master Reservoir Level Malfunction in my Lexus?

You can diagnose the issue by checking the brake fluid level in the reservoir, inspecting the wiring and connections to the brake fluid level sensor, and using a diagnostic scanner to read and clear the code.

4. Can I continue driving my Lexus with the C1202 OBDII code indicating a Master Reservoir Level Malfunction?

It is not recommended to drive your vehicle with this code, as it could lead to potential brake system issues and compromise safety. It is advisable to address the problem promptly.

5. How can I repair the C1202 OBDII code for Master Reservoir Level Malfunction in my Lexus?

Repair options may include replacing the brake fluid level sensor, repairing any damaged wiring in the sensor circuit, ensuring the brake fluid reservoir is functioning correctly, and clearing the code.

6. Is it possible to reset the C1202 OBDII code indicating a Master Reservoir Level Malfunction in a Lexus without fixing the issue?

While you can clear the code temporarily, it is crucial to address the underlying problem causing the code to prevent potential safety hazards and ensure proper brake system functionality.

7. How much does it typically cost to repair the C1202 OBDII code related to the Master Reservoir Level Malfunction in a Lexus?

The cost of repair can vary depending on the exact cause of the issue, but it may involve parts and labor expenses ranging from $100 to $300 or more, depending on the extent of the repair needed.

8. Can weather conditions or temperature fluctuations trigger the C1202 OBDII code for Master Reservoir Level Malfunction in a Lexus?

Extreme temperature changes can sometimes affect the brake fluid level sensor or the brake fluid itself, potentially leading to the triggering of this code. Regular maintenance can help prevent such issues.

9. Are there any preventive measures to avoid the C1202 OBDII code indicating a Master Reservoir Level Malfunction in a Lexus?

Regularly checking and maintaining the brake fluid level, ensuring the brake fluid reservoir is in good condition, and addressing any warning signs promptly can help prevent the occurrence of this code.

10. Will fixing the C1202 OBDII code related to the Master Reservoir Level Malfunction in my Lexus require professional assistance?

While some DIY enthusiasts may be able to address the issue themselves, it is recommended to seek the help of a qualified mechanic or technician, especially if you are unfamiliar with brake system components and repairs.

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