C0138 Chevrolet Code - Base Brake System Pressure Circuit/Sensor Low
Quick Answer
The Electronic Brake Control Module (EBCM) uses an input from 2 brake fluid pressure sensors to enhance ABS braking and vehicle stability if equipped. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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
- C0138 Chevrolet indicates Base Brake System Pressure Circuit/Sensor Low.
- Common causes
- Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module (EBCM) harness is open or shorted, Electronic Brake Control Module (EBCM) 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 C0138 Chevrolet Description
What are the Possible Causes of the DTC C0138 Chevrolet?
- Faulty Electronic Brake Control Module (EBCM)
- Electronic Brake Control Module (EBCM) harness is open or shorted
- Electronic Brake Control Module (EBCM) circuit poor electrical connection
How to Fix the DTC C0138 Chevrolet?
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 C0138 Chevrolet 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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Frequently Asked Questions about C0138 Chevrolet Code
1. What are the common symptoms of OBDII code C0138 in a Chevrolet related to the Base Brake System Pressure Circuit/Sensor Low?
- Common symptoms include the illumination of the ABS warning light on the dashboard, potential loss of ABS functionality, and issues with brake system performance.
2. What are some possible causes of the Base Brake System Pressure Circuit/Sensor Low OBDII code in a Chevrolet?
- Causes can include a faulty brake pressure sensor, damaged wiring or connectors in the brake system circuit, low brake fluid level, or a malfunctioning ABS module.
3. How can I diagnose the Base Brake System Pressure Circuit/Sensor Low issue in my Chevrolet?
- Diagnosis typically involves using a diagnostic scanner to retrieve the specific trouble code, inspecting the brake pressure sensor and related components for damage, and testing the wiring for continuity and proper connections.
4. Is it safe to drive my Chevrolet with the C0138 OBDII code related to the Base Brake System Pressure Circuit/Sensor Low?
- It is not recommended to drive your vehicle with this code present, as it may indicate potential issues with the brake system that could compromise safety. It's best to have the issue addressed promptly.
5. Can I repair the Base Brake System Pressure Circuit/Sensor Low problem in my Chevrolet on my own?
- While some DIY enthusiasts may be able to address this issue by inspecting and replacing faulty components like the brake pressure sensor or repairing damaged wiring, it's advisable to seek professional help for an accurate diagnosis and proper repair.
6. Will resetting the OBDII code C0138 related to the Base Brake System Pressure Circuit/Sensor Low make it go away permanently?
- Simply resetting the code without addressing the underlying issue will not solve the problem. The root cause of the code needs to be identified and fixed to prevent it from reoccurring.
7. How much does it typically cost to repair the Base Brake System Pressure Circuit/Sensor Low issue in a Chevrolet?
- The cost of repair can vary depending on the specific cause of the code and the labor rates in your area. It's recommended to get a diagnosis from a qualified mechanic to determine the exact cost.
8. What are the potential risks of ignoring the C0138 OBDII code related to the Base Brake System Pressure Circuit/Sensor Low?
- Ignoring this code can lead to potential brake system failures, loss of ABS functionality, and compromised vehicle safety. It's important to address the issue promptly to ensure proper braking performance.
9. Can extreme weather conditions affect the occurrence of the Base Brake System Pressure Circuit/Sensor Low OBDII code in a Chevrolet?
- Extreme temperatures or humidity levels can potentially impact the performance of brake system components, including sensors and wiring, which may contribute to the triggering of this code.
10. How long does it typically take to repair the Base Brake System Pressure Circuit/Sensor Low issue in a Chevrolet?
- The repair time can vary depending on the specific cause of the code and the complexity of the repair needed. In some cases, it may be a relatively quick fix, while in others, it could require more extensive troubleshooting and repair work.
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