C0139 Pontiac Code - Base Brake System Pressure Circuit/Sensor High
Quick Answer
The C0139 diagnostic trouble code (DTC) for Pontiac vehicles refers to an issue with the base brake system pressure circuit or sensor being too high. Common causes include Faulty base brake system pressure sensor, Blockage in the brake lines or hydraulic system, Malfunctioning brake master cylinder. 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
- C0139 Pontiac indicates Base Brake System Pressure Circuit/Sensor High.
- Common causes
- Common causes include Faulty base brake system pressure sensor, Blockage in the brake lines or hydraulic system, Malfunctioning brake master cylinder.
- 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 C0139 Pontiac Description
The C0139 diagnostic trouble code (DTC) for Pontiac vehicles refers to an issue with the base brake system pressure circuit or sensor being too high. The base brake system is a crucial component of a vehicle's braking system, responsible for generating hydraulic pressure to engage the brakes when the brake pedal is pressed. The pressure sensor in this system monitors the hydraulic pressure to ensure proper braking performance. When the sensor detects that the pressure is too high, it triggers the C0139 code.
Common Causes of C0139 Pontiac
- Faulty base brake system pressure sensor.
- Blockage in the brake lines or hydraulic system.
- Malfunctioning brake master cylinder.
- Contaminated brake fluid affecting pressure readings.
- Wiring or electrical issues affecting the pressure sensor's signal.
Symptoms of C0139 Pontiac
- Illumination of the brake warning light on the dashboard.
- Increased brake pedal resistance or a spongy brake pedal feel.
- Longer braking distances or reduced braking effectiveness.
- Unusual noises such as squealing or grinding when applying the brakes.
- ABS (Anti-lock Braking System) warning light may also illuminate.
How to Fix C0139 Pontiac
- Begin by conducting a thorough inspection of the base brake system, including the pressure sensor, brake lines, and master cylinder.
- Use a diagnostic scanner to retrieve and clear the C0139 code from the vehicle's computer.
- Test the base brake system pressure sensor to determine if it is functioning correctly or needs replacement.
- Check the brake lines for any blockages or leaks that may be causing the high pressure readings.
- If necessary, replace the faulty pressure sensor, clear the code again, and test the braking system to ensure proper operation.
Cost to Fix C0139 Pontiac
The cost of repairing a C0139 code on a Pontiac can vary depending on the specific cause of the issue and the labor rates in your area. On average, the parts for this repair, such as a new pressure sensor, may range from $50 to $150. Labor costs can add an additional $100 to $200, depending on the shop's hourly rates and the complexity of the repair. Overall, you can expect to pay anywhere from $150 to $350 for resolving a C0139 code on your Pontiac. It's recommended to obtain quotes from local auto repair shops to get a more accurate estimate based on your specific circumstances.
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Frequently Asked Questions about C0139 Pontiac Code
1. What are the common symptoms of OBDII code C0139 in a Pontiac related to the Base Brake System Pressure Circuit/Sensor High?
- Common symptoms include the illumination of the "Brake Warning Light" on the dashboard, decreased brake performance, and potential ABS system malfunctions.
2. What are the possible causes of OBDII code C0139 in a Pontiac?
- The code C0139 can be triggered by issues such as a faulty brake pressure sensor, damaged wiring or connectors in the brake system, or a problem with the brake control module.
3. How can I diagnose OBDII code C0139 in my Pontiac?
- Diagnosing this code typically involves using a diagnostic scanner to read the trouble codes, checking the brake system components for any visible damage, and testing the brake pressure sensor for proper functionality.
4. Can I still drive my Pontiac with OBDII code C0139 present?
- It is not recommended to drive your vehicle with code C0139 present, as it could lead to brake system failures or malfunctions, compromising your safety on the road.
5. How can I repair OBDII code C0139 in my Pontiac?
- Repairing this code may involve replacing the faulty brake pressure sensor, repairing any damaged wiring or connectors, or addressing any issues with the brake control module as needed.
6. Is it possible to reset OBDII code C0139 in my Pontiac without fixing the underlying issue?
- While you can clear the trouble codes using a diagnostic scanner, the code will likely reappear until the root cause of the issue is resolved.
7. Are there any DIY tips for fixing OBDII code C0139 in a Pontiac?
- DIY tips include checking for loose or damaged wiring in the brake system, ensuring proper sensor connections, and consulting the vehicle's repair manual for specific troubleshooting steps.
8. How much does it typically cost to repair OBDII code C0139 in a Pontiac?
- The cost of repairing this code can vary depending on the specific issue, but it may range from $100 to $500, including parts and labor.
9. Can a mechanic easily fix OBDII code C0139 in a Pontiac?
- A qualified mechanic with experience in brake system repairs should be able to diagnose and fix OBDII code C0139 in a Pontiac efficiently and effectively.
10. How important is it to address OBDII code C0139 promptly in my Pontiac?
- Addressing code C0139 promptly is crucial to ensure the proper functioning of your vehicle's brake system and maintain safe driving conditions. Delaying repairs could lead to more severe issues down the line.
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