AutoCodesLincoln – C1523 Lincoln

C1523 Lincoln Code - Brake Fluid Level Sensor Out of Range

Quick Answer

The red brake warning indicator, located on the instrument cluster, illuminates at proving out when the brake fluid in the brake master cylinder reservoir is below an acceptable level, when the parking brake is engaged, or if Diagnostic Trouble Code (DTC)s are present. Common causes include Low brake fluid level, Faulty Parking brake switch, Faulty Brake master cylinder reservoir. 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
C1523 Lincoln indicates Brake Fluid Level Sensor Out of Range.
Common causes
Common causes include Low brake fluid level, Faulty Parking brake switch, Faulty Brake master cylinder reservoir.
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 Popularity 677
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Oct 22, 2020
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Code C1523 Lincoln Description

The red brake warning indicator, located on the instrument cluster, illuminates at proving out when the brake fluid in the brake master cylinder reservoir is below an acceptable level, when the parking brake is engaged, or if Diagnostic Trouble Code (DTC)s are present.
OBDII Code C1523 Lincoln - Brake Fluid Level Sensor Out of Range - AutoCodes.com
C1523 Lincoln Code - Brake Fluid Level Sensor Out of Range

What are the Possible Causes of the DTC C1523 Lincoln?

  • Low brake fluid level
  • Faulty Parking brake switch
  • Faulty Brake master cylinder reservoir
  • Faulty Brake Fluid Level Sensor
  • Brake Fluid Level Sensor harness is open or shorted
  • Brake Fluid Level Sensor circuit poor electrical connection

How to Fix the DTC C1523 Lincoln?

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 C1523 Lincoln 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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Need Help with the 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 C1523 Lincoln Code

1. What does the OBDII code C1523 mean on a Lincoln?

C1523 indicates that the brake fluid level sensor is providing a signal that is out of the expected range, which could signify a sensor issue or low brake fluid.

2. What are common symptoms of the C1523 code on a Lincoln?

Symptoms may include the brake warning light illuminating, reduced braking performance, or a soft brake pedal feel.

3. What causes the C1523 code to appear?

Possible causes include low brake fluid, a faulty brake fluid level sensor, damaged wiring or connectors, or issues with the ABS control module.

4. Can I drive my Lincoln with a C1523 code?

Driving with the C1523 code is not recommended, as it could indicate a critical brake system issue that may impair braking performance.

5. How do I fix the C1523 code on my Lincoln?

Start by checking the brake fluid level and topping it off if low. Inspect the brake fluid level sensor, wiring, and connectors for damage. Replace faulty components if necessary.

6. How do I know if the brake fluid level sensor is faulty?

If the brake fluid level is correct and the wiring is intact, but the C1523 code persists, the sensor may be defective and require replacement.

7. Could low brake fluid alone trigger the C1523 code?

Yes, if the brake fluid level drops below the minimum threshold, it can cause the sensor to send an out-of-range signal, triggering the code.

8. What tools do I need to diagnose a C1523 code?

You’ll need an OBDII scanner to retrieve and clear the code, along with basic tools to inspect and test the brake fluid level sensor and its wiring.

9. How much does it cost to fix the C1523 code on a Lincoln?

Repair costs vary depending on the issue. Topping off brake fluid is inexpensive, while replacing the brake fluid level sensor may cost $50–$150 for parts plus labor.

10. Can a C1523 code be caused by a software issue?

Although rare, a malfunction in the ABS control module software could cause the code. Reprogramming or updating the module may be necessary in such cases.

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