P0279 2017 Chevrolet Silverado Code - Cylinder 7 Injector Control Circuit Low Voltage
Quick Answer
The Engine Control Module (ECM) supplies voltage to each Fuel Injector on the high control circuits. Common causes include Dirty Fuel Injector 7, Faulty Fuel Injector 7, Plugged Fuel Injector 7. 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
- P0279 2017 Chevrolet Silverado indicates Cylinder 7 Injector Control Circuit Low Voltage.
- Common causes
- Common causes include Dirty Fuel Injector 7, Faulty Fuel Injector 7, Plugged Fuel Injector 7.
- 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 P0279 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC P0279 2017 Chevrolet Silverado?
- Dirty Fuel Injector 7
- Faulty Fuel Injector 7
- Plugged Fuel Injector 7
- Fuel injector 7 harness is open or shorted
- Fuel injector 7 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0279 2017 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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0279 2017 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.
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Frequently Asked Questions about P0279 2017 Chevrolet Silverado Code
What does the OBDII code P0279 mean for a 2017 Chevrolet Silverado?
Code P0279 indicates a low voltage issue in the Cylinder 7 Injector Control Circuit, meaning the injector may not be receiving the proper electrical signal.
What are the common symptoms of code P0279 in a 2017 Chevrolet Silverado?
Symptoms may include rough idling, misfires, reduced fuel efficiency, decreased engine performance, and sometimes difficulty starting the vehicle.
What causes the P0279 code to appear?
Common causes include wiring issues such as frayed or damaged wires, a faulty fuel injector, a malfunctioning engine control module (ECM), or poor electrical connections.
Can I drive my 2017 Chevrolet Silverado with the P0279 code?
Driving with this code may lead to further engine damage or decreased performance. It is best to address the issue promptly to avoid worsening the problem.
How is the P0279 code diagnosed?
Technicians typically use a scan tool to confirm the code, inspect the injector wiring and connectors, test the fuel injector itself, and check the ECM for potential faults.
How do I fix the P0279 code on my 2017 Chevrolet Silverado?
Repairs may involve replacing a damaged fuel injector, repairing or replacing faulty wiring, cleaning electrical connectors, or reprogramming or replacing the ECM if necessary.
How much does it cost to repair the P0279 code?
Repair costs vary based on the cause but can range from $150 to $500 for injector-related issues or more if the ECM needs replacement.
Can a dirty fuel injector cause the P0279 code?
While a dirty injector may cause performance issues, the P0279 code specifically points to a low voltage problem, likely due to electrical faults rather than dirt buildup.
What tools are needed to troubleshoot the P0279 code?
You’ll need an OBDII scan tool, a multimeter for checking voltage, and possibly wiring diagrams to trace electrical issues in the injector circuit.
Is the P0279 code specific to Cylinder 7?
Yes, the P0279 code specifically relates to the injector control circuit for Cylinder 7 in the engine.
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