C1239 2014 GMC Sierra Code - Brake Pressure Sensor 1/2 Correlation
Quick Answer
The C1239 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a brake pressure sensor 1/2 correlation issue. Common causes include Faulty brake pressure sensor 1 or sensor 2, Wiring harness issues or electrical connection problems, Corrosion or damage to sensor connectors. 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
- C1239 2014 GMC Sierra indicates Brake Pressure Sensor 1/2 Correlation.
- Common causes
- Common causes include Faulty brake pressure sensor 1 or sensor 2, Wiring harness issues or electrical connection problems, Corrosion or damage to sensor connectors.
- 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 C1239 2014 GMC Sierra Description
The C1239 diagnostic trouble code (DTC) for a 2014 GMC Sierra indicates a brake pressure sensor 1/2 correlation issue. This means that there is a discrepancy between the readings of the two brake pressure sensors in the vehicle's braking system. The brake pressure sensors are responsible for monitoring the hydraulic pressure in the brake system and ensuring that the brakes function properly. When there is a correlation problem between the two sensors, it can affect the vehicle's braking performance and safety.
Common Causes of C1239 2014 GMC Sierra
- Faulty brake pressure sensor 1 or sensor 2.
- Wiring harness issues or electrical connection problems.
- Corrosion or damage to sensor connectors.
- Hydraulic brake system malfunction.
- ABS module failure.
Symptoms of C1239 2014 GMC Sierra
- Illumination of the ABS warning light on the dashboard.
- Increased stopping distance when applying the brakes.
- Brake pedal feels spongy or unresponsive.
- Inconsistent brake pressure when braking.
- ABS system may engage unexpectedly or more frequently.
How to Fix C1239 2014 GMC Sierra
- Begin by conducting a thorough diagnostic scan to confirm the C1239 code and identify the specific sensor causing the correlation issue.
- Inspect the wiring harness and sensor connectors for any signs of damage, corrosion, or loose connections. Repair or replace as necessary.
- Test the brake pressure sensors individually to determine if one or both sensors are faulty. Replace the faulty sensor(s).
- Clear the DTC and perform a test drive to ensure that the issue has been resolved and the ABS system functions properly.
- If the problem persists, further inspection of the hydraulic brake system and ABS module may be required.
Cost to Fix C1239 2014 GMC Sierra
The typical repair costs for addressing a brake pressure sensor 1/2 correlation issue can vary depending on the extent of the problem and the specific components that need to be replaced. On average, the parts for this repair can range from $100 to $300, while the labor costs may amount to $150 to $300. Keep in mind that these estimates are general and can fluctuate based on factors such as location, vehicle make and model, and the shop's labor rates. It is advisable to consult with a professional mechanic for a more accurate cost estimate tailored to your specific situation.
Need more information about the C1239 2014 GMC Sierra code?
Need more information on how to fix the C1239 2014 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C1239 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about C1239 2014 GMC Sierra Code
No Frequently Asked Questions about C1239 2014 GMC Sierra Code found.
Discuss the causes and fixes for C1239 2014 GMC Sierra OBDII Code
Code C1239 2014 GMC Sierra 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.