AutoCodes – Cadillac – C0202 Cadillac

C0202 Cadillac Code - Master Cylinder Pressure Sensor

Quick Answer

The Electronic Brake Control Module (EBCM) uses the input from the master cylinder pressure sensor for more accurate braking control during a vehicle stability enhancement system (VSES) event. Common causes include Faulty Master Cylinder Pressure Sensor, Master Cylinder Pressure Sensor harness is open or shorted, Master Cylinder Pressure Sensor 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: C0202 Cadillac indicates Master Cylinder Pressure Sensor.
Common causes: Common causes include Faulty Master Cylinder Pressure Sensor, Master Cylinder Pressure Sensor harness is open or shorted, Master Cylinder Pressure Sensor 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.

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Code Popularity 1,235

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 09, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code C0202 Cadillac Description

OBDII Code C0202 Cadillac - Master Cylinder Pressure Sensor - AutoCodes.com — C0202 Cadillac Code - Master Cylinder Pressure Sensor

What does this mean?

What are the Possible Causes of the DTC C0202 Cadillac?

Faulty Master Cylinder Pressure Sensor
Master Cylinder Pressure Sensor harness is open or shorted
Master Cylinder Pressure Sensor circuit poor electrical connection

How to Fix the DTC C0202 Cadillac?

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 C0202 Cadillac 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 C0202 Cadillac Code

1. What are the common symptoms of OBDII code C0202 in a Cadillac related to the Master Cylinder Pressure Sensor?

The common symptoms include the ABS warning light or traction control light illuminating on the dashboard, decreased braking performance, and potential ABS system malfunctions.

2. What are the possible causes of OBDII code C0202 related to the Master Cylinder Pressure Sensor in a Cadillac?

Common causes include a faulty master cylinder pressure sensor, wiring issues, sensor misalignment, or problems with the ABS control module.

3. How can I diagnose the OBDII code C0202 in my Cadillac related to the Master Cylinder Pressure Sensor?

Diagnosis typically involves using a professional OBDII scanner to retrieve the specific trouble code, inspecting the wiring and connections to the sensor, and testing the sensor's functionality.

4. Can I still drive my Cadillac with OBDII code C0202 related to the Master Cylinder Pressure Sensor?

It is not recommended to drive the vehicle with this code present, as it can affect the proper functioning of the ABS system and compromise braking performance.

5. How can I repair OBDII code C0202 in my Cadillac related to the Master Cylinder Pressure Sensor?

Repair options include replacing the faulty master cylinder pressure sensor, repairing any damaged wiring, realigning the sensor if needed, or addressing any issues with the ABS control module.

6. Is it necessary to reset the OBDII code C0202 in my Cadillac after repairing the Master Cylinder Pressure Sensor issue?

Yes, it is important to clear the trouble code using an OBDII scanner after repairing the problem to reset the ABS system and ensure proper functionality.

7. Can a DIY enthusiast fix the OBDII code C0202 related to the Master Cylinder Pressure Sensor in a Cadillac?

While some basic troubleshooting and repairs can be done by a DIY enthusiast, dealing with ABS system components like the master cylinder pressure sensor may require professional expertise.

8. How much does it typically cost to repair OBDII code C0202 in a Cadillac related to the Master Cylinder Pressure Sensor?

The cost of repair can vary depending on the extent of the issue, the need for parts replacement, and labor costs, but it may range from a few hundred to a thousand dollars.

9. Are there any preventive measures to avoid OBDII code C0202 related to the Master Cylinder Pressure Sensor in a Cadillac?

Regular maintenance of the ABS system, checking for any signs of sensor issues, and addressing brake system problems promptly can help prevent this trouble code from occurring.

10. How long does it take to repair OBDII code C0202 in a Cadillac related to the Master Cylinder Pressure Sensor?

The repair time can vary based on the specific issue and the expertise of the technician, but it may take a few hours to a full day to diagnose and fix the problem.