C0138 Saturn Code - Base Brake System Pressure Circuit/Sensor Low
Quick Answer
The C0138 diagnostic trouble code (DTC) for Saturn vehicles indicates a problem with the base brake system pressure circuit/sensor being too low. Common causes include Faulty brake pressure sensor, Leaking brake fluid, Worn brake pads or rotors. 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 Saturn indicates Base Brake System Pressure Circuit/Sensor Low.
- Common causes
- Common causes include Faulty brake pressure sensor, Leaking brake fluid, Worn brake pads or rotors.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code C0138 Saturn Description
The C0138 diagnostic trouble code (DTC) for Saturn vehicles indicates a problem with the base brake system pressure circuit/sensor being too low. In simpler terms, this means that there is a potential issue with the brake system's ability to maintain proper pressure, which is crucial for safe and effective braking performance.
Common Causes of C0138 Saturn
- Faulty brake pressure sensor
- Leaking brake fluid
- Worn brake pads or rotors
- Air in the brake lines
- Malfunctioning brake master cylinder
Symptoms of C0138 Saturn
- Illuminated brake warning light on the dashboard
- Soft or spongy brake pedal feel
- Longer stopping distances
- Brake system may engage unexpectedly or inconsistently
- Increased pedal effort required to brake effectively
How to Fix C0138 Saturn
- Diagnose the issue: Use a diagnostic scanner to retrieve the specific trouble code and perform a thorough inspection of the brake system components to identify the root cause of the low base brake system pressure.
- Check brake fluid level and condition: Ensure that the brake fluid reservoir is filled to the appropriate level and check for any signs of contamination or leaks.
- Inspect brake pressure sensor: Test the brake pressure sensor for proper function and replace if necessary.
- Bleed the brake system: Remove any air bubbles from the brake lines by bleeding the system to restore proper hydraulic pressure.
- Replace faulty components: Repair or replace any damaged or worn brake system components, such as brake pads, rotors, or the master cylinder, as needed to restore proper brake performance.
Cost to Fix C0138 Saturn
The typical cost for repairing a low base brake system pressure circuit/sensor issue can vary depending on the specific cause of the problem and the extent of the repairs needed. On average, the cost for parts and labor for this type of repair could range from $200 to $500. However, it's important to note that actual repair costs can be higher or lower based on factors such as the vehicle's make and model, the severity of the issue, and the labor rates in your area. It is recommended to consult a qualified mechanic or auto repair shop for a more accurate estimate based on your vehicle's specific needs.
Need more information about the C0138 Saturn code?
Need more information on how to fix the C0138 Saturn code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C0138 Saturn code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about C0138 Saturn Code
1. What are the common symptoms of OBDII code C0138 in a Saturn related to the Base Brake System Pressure Circuit/Sensor Low?
- Common symptoms include the illumination of the ABS warning light, a soft or spongy brake pedal feel, and potential loss of brake assist.
2. What are the possible causes of OBDII code C0138 in a Saturn related to the Base Brake System Pressure Circuit/Sensor Low?
- The code C0138 can be triggered by issues such as a faulty brake pressure sensor, low brake fluid level, damaged wiring, or a malfunctioning ABS module.
3. How serious is OBDII code C0138 in a Saturn related to the Base Brake System Pressure Circuit/Sensor Low?
- This code indicates a potential issue with the base brake system pressure circuit, which can affect the vehicle's braking performance. It is important to address this issue promptly to ensure safe operation of the vehicle.
4. Can I continue driving my Saturn with OBDII code C0138 related to the Base Brake System Pressure Circuit/Sensor Low?
- It is not recommended to drive the vehicle with this code present, as it may lead to compromised braking performance. It's best to have the issue diagnosed and repaired as soon as possible.
5. How can I diagnose OBDII code C0138 in my Saturn related to the Base Brake System Pressure Circuit/Sensor Low?
- Diagnosis typically involves using a scan tool to retrieve the trouble code, inspecting the brake pressure sensor and related wiring, and performing a brake system pressure test to identify the root cause.
6. What are some DIY repair tips for addressing OBDII code C0138 in a Saturn related to the Base Brake System Pressure Circuit/Sensor Low?
- DIYers can start by checking the brake fluid level, inspecting the brake pressure sensor for signs of damage, and ensuring all wiring connections are secure. If unsure, it's best to consult a professional mechanic for further diagnosis and repair.
7. Does resetting the OBDII code C0138 related to the Base Brake System Pressure Circuit/Sensor Low resolve the issue in a Saturn?
- Simply clearing the trouble code may temporarily turn off the warning light, but it will not fix the underlying problem causing the code. It's essential to diagnose and address the root cause to prevent future issues.
8. Can a faulty ABS module trigger OBDII code C0138 in a Saturn related to the Base Brake System Pressure Circuit/Sensor Low?
- Yes, a malfunctioning ABS module can potentially cause this code to be triggered, as the module plays a crucial role in monitoring and controlling the base brake system pressure circuit.
9. What is the typical cost to repair OBDII code C0138 in a Saturn related to the Base Brake System Pressure Circuit/Sensor Low?
- The cost of repair can vary depending on the specific cause of the issue. It's recommended to obtain a diagnostic from a qualified mechanic to determine the exact repair cost.
10. Is it necessary to have a professional mechanic address OBDII code C0138 in a Saturn related to the Base Brake System Pressure Circuit/Sensor Low?
- Due to the safety implications of brake system issues, it is advisable to have a professional mechanic diagnose and repair OBDII code C0138 to ensure the problem is properly addressed.
Discuss the causes and fixes for C0138 Saturn OBDII Code
Code C0138 Saturn comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.