AutoCodes – Toyota – C1202 Toyota

C1202 Toyota 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 Toyota 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 30,348
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 Toyota 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 Toyota - Master Reservoir Level Malfunction - AutoCodes.com
C1202 Toyota Code - Master Reservoir Level Malfunction

What are the Possible Causes of the DTC C1202 Toyota?

  • 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 Toyota?

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 Toyota 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 Toyota code?

Need more information on how to fix the C1202 Toyota code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C1202 Toyota code diagnosed by a professional: Find a repair shop in your area

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 Toyota Code

1. What are common symptoms of the OBDII code C1202 Toyota (Master Reservoir Level Malfunction)?

Common symptoms include the illumination of the brake warning light on the dashboard, loss of brake fluid, and potential issues with the brake system's hydraulic operation.

2. What could cause the OBDII code C1202 Toyota to appear?

The code C1202 typically indicates a malfunction related to the master reservoir level sensor, which may be caused by a faulty sensor, wiring issues, or low brake fluid levels.

3. How can I diagnose the OBDII code C1202 Toyota at home?

You can diagnose the code C1202 by visually inspecting the brake fluid reservoir for proper fluid levels, checking for any leaks, and inspecting the wiring and connector of the master reservoir level sensor for damage.

4. Can I continue driving my Toyota with the OBDII code C1202 present?

It is not recommended to drive your Toyota with the code C1202 present, as it indicates a potential issue with the brake system that could compromise your vehicle's safety and performance.

5. What are some repair tips for fixing the OBDII code C1202 Toyota?

Repair tips include checking and replenishing brake fluid levels, inspecting and cleaning the master reservoir level sensor, repairing any damaged wiring or connectors, and resetting the fault code with an OBDII scanner.

6. How much does it cost to repair the OBDII code C1202 Toyota at a repair shop?

The cost of repairing the code C1202 can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor at a repair shop.

7. Can I reset the OBDII code C1202 Toyota without fixing the underlying issue?

While you can clear the fault code temporarily with an OBDII scanner, it is important to address the root cause of the problem to prevent the code from reappearing and ensure the proper functioning of your brake system.

8. Is the OBDII code C1202 Toyota specific to certain Toyota models?

The code C1202 related to the Master Reservoir Level Malfunction is commonly found in various Toyota models, including Camry, Corolla, RAV4, and Highlander, among others.

9. How urgent is it to address the OBDII code C1202 Toyota once it appears?

It is recommended to address the code C1202 promptly once it appears to avoid potential safety hazards and ensure the proper functioning of your vehicle's brake system.

10. Can I fix the OBDII code C1202 Toyota myself, or should I seek professional help?

While some DIY enthusiasts may be able to address the code C1202 themselves by following repair guides, it is advisable to seek professional help, especially if you are not experienced in handling brake system components.

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