C0202 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 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.
Code C0202 Description
What are the Possible Causes of the DTC C0202?
- 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?
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 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 C0202 code?
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Need Help with the Code?
Get the C0202 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- C0202 Buick — Master Cylinder Pressure Sensor
- C0202 Cadillac — Master Cylinder Pressure Sensor
- C0202 Chevrolet — Master Cylinder Pressure Sensor
- C0202 GMC — Master Cylinder Pressure Sensor
- C0202 Pontiac — Master Cylinder Pressure Sensor
- C0202 Saturn — Master Cylinder Pressure Sensor
Frequently Asked Questions about C0202 Code
1. What are the common symptoms of OBDII code C0202 (Master Cylinder Pressure Sensor)?
The common symptoms include the illumination of the Check Engine Light on the dashboard, issues with the vehicle's braking system, and potential loss of brake performance.
2. What are the possible causes of OBDII code C0202 (Master Cylinder Pressure Sensor)?
The code C0202 can be triggered by a faulty master cylinder pressure sensor, damaged wiring or connectors related to the sensor, low brake fluid level, or issues with the brake hydraulic system.
3. How can I diagnose the OBDII code C0202 (Master Cylinder Pressure Sensor)?
Diagnosing the code involves using an OBDII scanner to retrieve the specific error code, inspecting the master cylinder pressure sensor and its wiring for any visible damage, and checking the brake fluid level.
4. Can I drive my vehicle with OBDII code C0202 (Master Cylinder Pressure Sensor) present?
It is not recommended to drive the vehicle with this code present, as it can affect the performance of the braking system and compromise safety. It's best to address the issue promptly.
5. How can I repair OBDII code C0202 (Master Cylinder Pressure Sensor)?
Repairing the code typically involves replacing the faulty master cylinder pressure sensor, repairing or replacing damaged wiring or connectors, and ensuring the brake fluid level is correct.
6. Is it possible to reset OBDII code C0202 (Master Cylinder Pressure Sensor) without fixing the underlying issue?
Resetting the code without addressing the root cause will only temporarily clear the Check Engine Light. The issue will likely resurface until the actual problem is fixed.
7. Can a DIY enthusiast fix OBDII code C0202 (Master Cylinder Pressure Sensor)?
While some enthusiasts may have the skills to replace the master cylinder pressure sensor or repair wiring, it's generally recommended to have a professional mechanic diagnose and fix this issue due to its critical nature.
8. How much does it cost to repair OBDII code C0202 (Master Cylinder Pressure Sensor)?
The cost of repairing this code can vary depending on the specific cause of the issue, the labor rates of the repair shop, and the cost of parts. It's advisable to get a few quotes from different mechanics.
9. Will OBDII code C0202 (Master Cylinder Pressure Sensor) cause the vehicle to fail an emissions test?
If the Check Engine Light is illuminated due to this code, the vehicle may fail an emissions test, as the braking system is a critical component for safe and efficient operation of the vehicle.
10. Are there any preventative maintenance tips to avoid OBDII code C0202 (Master Cylinder Pressure Sensor)?
Regularly checking the brake fluid level, inspecting the brake system for leaks or damage, and promptly addressing any braking issues can help prevent the occurrence of OBDII code C0202 related to the master cylinder pressure sensor.
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