C1239 2017 GMC Sierra Code - Brake Pressure Sensor 1/2 Correlation
Quick Answer
The Electronic Brake Control Module uses inputs from the Electronic Brake Control Brake Pedal Position Sensor to determine when the brake is applied and how much force is used. Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control Module 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
- C1239 2017 GMC Sierra indicates Brake Pressure Sensor 1/2 Correlation.
- Common causes
- Common causes include Faulty Electronic Brake Control Module (EBCM), Electronic Brake Control Module harness is open or shorted, Electronic Brake Control Module 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 C1239 2017 GMC Sierra Description
Brake pressure sensor information is communicated from the Electronic Brake Control Module (EBCM) to the Hybrid Control Processor (HCP). This information is used to schedule regenerative braking and engine autostops.
The Diagnostic Trouble Code (DTC) will be set when the Engine Control Module (ECM) detects a corrupted data message from the Electronic Brake Control Module.
What are the Possible Causes of the DTC C1239 2017 GMC Sierra?
- Faulty Electronic Brake Control Module (EBCM)
- Electronic Brake Control Module harness is open or shorted
- Electronic Brake Control Module circuit poor electrical connection
- Faulty Starter/Generator Control Module
How to Fix the DTC C1239 2017 GMC Sierra?
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 C1239 2017 GMC Sierra 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 C1239 2017 GMC Sierra code?
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Frequently Asked Questions about C1239 2017 GMC Sierra Code
1. What are the common symptoms of OBDII code C1239 in a 2017 GMC Sierra related to the Brake Pressure Sensor 1/2 Correlation?
- Common symptoms may include the ABS warning light illuminating on the dashboard, issues with the brake system, and potential loss of stability control.
2. What can cause the OBDII code C1239 in a 2017 GMC Sierra?
- The code C1239 can be triggered by issues such as a faulty brake pressure sensor, wiring problems, or a malfunction in the ABS control module.
3. How serious is the Brake Pressure Sensor 1/2 Correlation issue indicated by code C1239 in a 2017 GMC Sierra?
- This issue is considered serious as it directly affects the proper functioning of the vehicle's ABS and stability control systems, compromising overall safety.
4. Can I continue driving my 2017 GMC Sierra with OBDII code C1239 present?
- It is not recommended to continue driving with this code active, as it can impact the performance of the brake system and stability control, potentially leading to unsafe driving conditions.
5. How can I diagnose the cause of OBDII code C1239 in my 2017 GMC Sierra?
- Diagnosis typically involves using a diagnostic scanner to read the code, checking the brake pressure sensor and related wiring for faults, and inspecting the ABS control module.
6. What are some repair options for fixing OBDII code C1239 in a 2017 GMC Sierra?
- Repair options may include replacing the faulty brake pressure sensor, repairing damaged wiring, or reprogramming the ABS control module to resolve the correlation issue.
7. Is it possible to reset the OBDII code C1239 in a 2017 GMC Sierra without fixing the underlying issue?
- While you can clear the code temporarily, it will likely reappear until the root cause of the Brake Pressure Sensor 1/2 Correlation problem is addressed.
8. Can a DIY enthusiast fix the OBDII code C1239 issue in a 2017 GMC Sierra?
- DIY repair of this issue may be challenging due to the complexity of the ABS system, and it is recommended to seek professional help for an accurate diagnosis and proper repair.
9. How much does it typically cost to repair OBDII code C1239 related to the Brake Pressure Sensor 1/2 Correlation in a 2017 GMC Sierra?
- The cost of repair can vary depending on the exact cause of the issue, but it may involve parts replacement, wiring repairs, or ABS module reprogramming, potentially ranging from a few hundred to over a thousand dollars.
10. What preventative maintenance can help avoid triggering OBDII code C1239 in a 2017 GMC Sierra?
- Regularly inspecting the brake system, including the brake pressure sensor, and addressing any issues promptly can help prevent the occurrence of code C1239 and ensure the proper functioning of the ABS system.
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