P279C 2016 Chevrolet Silverado Code - Four Wheel Drive Neutral Range Performance
Quick Answer
The Engine Control Module (ECM) uses the following two ways to determine if the transfer case is in 4WD Low, 4WD High, or Neutral. Common causes include Reprogram Engine Control Module (ECM), Faulty Engine Control Module, Engine Control Module harness is open or shorted. 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
- P279C 2016 Chevrolet Silverado indicates Four Wheel Drive Neutral Range Performance.
- Common causes
- Common causes include Reprogram Engine Control Module (ECM), Faulty Engine Control Module, Engine Control Module harness is open or shorted.
- 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 P279C 2016 Chevrolet Silverado Description
1. The first way is to compare the transmission output speed sensor to the transfer case output speed sensor in order to calculate the transfer case range.
2. The second way is to use a LAN message sent by the transfer case shift control module to the ECM.
The ECM uses this message to determine motor torque required and transmission shifting.
The internal fault detection is handled inside the control module. No external circuit diagnosis is involved.
If the first way and second way of determining transfer case range do not match while in 4WD Low, 4WD High or Neutral, then the Diagnostic Trouble Code (DTC) is set.
What are the Possible Causes of the DTC P279C 2016 Chevrolet Silverado?
- Reprogram Engine Control Module (ECM)
- Faulty Engine Control Module
- Engine Control Module harness is open or shorted
- Engine Control Module circuit poor electrical connection
- Transmission internal mechanical problems
How to Fix the DTC P279C 2016 Chevrolet Silverado?
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 P279C 2016 Chevrolet Silverado 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 P279C 2016 Chevrolet Silverado code?
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Frequently Asked Questions about P279C 2016 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P279C on a 2016 Chevrolet Silverado?
The common symptoms include difficulty engaging or disengaging four-wheel drive, the vehicle getting stuck in neutral range, and a warning light on the dashboard.
2. What are the possible causes of OBDII code P279C on a 2016 Chevrolet Silverado?
The code P279C typically indicates issues with the four-wheel drive neutral range performance, which can be caused by a faulty transfer case control module, damaged wiring, or a malfunctioning four-wheel drive actuator.
3. How can I diagnose the OBDII code P279C on my 2016 Chevrolet Silverado?
Diagnosing code P279C involves using an OBDII scanner to retrieve the code, inspecting the wiring and connectors related to the four-wheel drive system, and performing a detailed inspection of the transfer case control module and actuator.
4. Can I continue driving my 2016 Chevrolet Silverado with OBDII code P279C?
It is not recommended to continue driving the vehicle with code P279C as it may lead to further damage to the four-wheel drive system. It is advisable to address the issue promptly to avoid any safety risks.
5. How can I repair OBDII code P279C on my 2016 Chevrolet Silverado?
Repairing code P279C may involve replacing the transfer case control module, repairing or replacing damaged wiring, or replacing the four-wheel drive actuator. It is recommended to consult a professional mechanic for an accurate diagnosis and repair.
6. Can a DIY enthusiast fix OBDII code P279C on a 2016 Chevrolet Silverado?
While some basic troubleshooting steps can be performed by a DIY enthusiast, diagnosing and repairing code P279C may require specialized tools and expertise. It is recommended to seek assistance from a qualified mechanic for proper diagnosis and repair.
7. How much does it cost to repair OBDII code P279C on a 2016 Chevrolet Silverado?
The cost of repairing code P279C can vary depending on the specific cause of the issue, the labor rates in your area, and the cost of parts. It is advisable to obtain quotes from different repair shops to compare prices.
8. Is OBDII code P279C a common issue in 2016 Chevrolet Silverado vehicles?
While OBDII code P279C related to four-wheel drive neutral range performance is not extremely common, it can occur in 2016 Chevrolet Silverado trucks due to various factors such as component wear and electrical issues.
9. Can extreme weather conditions trigger OBDII code P279C on a 2016 Chevrolet Silverado?
Extreme weather conditions, such as very cold temperatures, can potentially affect the performance of the four-wheel drive system and trigger code P279C. Ensuring proper maintenance and regular inspections can help prevent such issues.
10. Will resetting the OBDII code P279C on my 2016 Chevrolet Silverado make it go away permanently?
Resetting the OBDII code P279C may temporarily clear the warning light, but if the underlying issue causing the code is not addressed, it is likely to reoccur. It is essential to diagnose and repair the root cause of the problem to prevent future occurrences.
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