AutoCodes – Chevrolet – P0277 2016 Chevrolet Silverado

P0277 2016 Chevrolet Silverado Code - Cylinder 6 Injector Control Circuit High 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 6, Faulty Fuel Injector 6, Plugged Fuel Injector 6. 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: P0277 2016 Chevrolet Silverado indicates Cylinder 6 Injector Control Circuit High Voltage.
Common causes: Common causes include Dirty Fuel Injector 6, Faulty Fuel Injector 6, Plugged Fuel Injector 6.
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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 223

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 23, 2024

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code P0277 2016 Chevrolet Silverado Description

The Engine Control Module (ECM) supplies voltage to each Fuel Injector on the high control circuits. The ECM energizes each fuel injector by grounding the low control circuit of the fuel injector. The ECM monitors the status of the fuel injector circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injector(s) is disabled. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the fuel injector control circuit is shorted to voltage for greater than 2 s.

OBDII Code P0277 2016 Chevrolet Silverado - Cylinder 6 Injector Control Circuit High Voltage - AutoCodes.com — P0277 2016 Chevrolet Silverado Code - Cylinder 6 Injector Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0277 2016 Chevrolet Silverado?

Dirty Fuel Injector 6
Faulty Fuel Injector 6
Plugged Fuel Injector 6
Fuel injector 6 harness is open or shorted
Fuel injector 6 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0277 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 does this mean?

Code Tech Notes

A clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0277 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 P0277 2016 Chevrolet Silverado code?

Need more information on how to fix the P0277 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0277 2016 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0277 2016 Chevrolet Silverado Code

1. What does the OBDII code P0277 mean on a 2016 Chevrolet Silverado?

P0277 indicates that the Engine Control Module (ECM) has detected a high voltage condition in the Cylinder 6 injector control circuit.

2. What are the common symptoms of code P0277 in a 2016 Chevrolet Silverado?

Symptoms may include rough idling, engine misfiring, reduced fuel efficiency, poor acceleration, and the Check Engine Light being illuminated.

3. What causes the P0277 code to appear in my 2016 Chevrolet Silverado?

Common causes include a faulty fuel injector, damaged or corroded wiring in the injector circuit, a defective ECM, or poor electrical connections.

4. Can I continue driving my 2016 Silverado with a P0277 code?

Driving with this code is not recommended, as it can lead to further engine damage, decreased performance, and potential safety issues.

5. How can I diagnose the P0277 code on my 2016 Chevrolet Silverado?

Start by inspecting the wiring and connectors for Cylinder 6â€™s fuel injector, checking for damage or corrosion. Use a multimeter to test circuit voltage and resistance, and scan for additional codes.

6. How do I fix the P0277 code on a 2016 Chevrolet Silverado?

Repairs may include replacing the Cylinder 6 fuel injector, repairing or replacing damaged wiring, cleaning or reconnecting electrical connectors, or in rare cases, replacing the ECM.

7. How much does it cost to repair a P0277 code on a Silverado?

Repair costs vary, but replacing a fuel injector typically ranges from $150 to $300, while repairing wiring or connectors may cost $50 to $200 depending on labor.

8. Can a clogged fuel injector trigger the P0277 code?

No, a clogged injector is unlikely to cause high voltage in the circuit. The issue is typically related to electrical faults rather than mechanical blockages.

9. Will clearing the P0277 code fix the problem on my 2016 Silverado?

Clearing the code without addressing the underlying issue will not fix the problem, and the code is likely to return.

10. Can a weak battery cause a P0277 code in a 2016 Chevrolet Silverado?

A weak battery is unlikely to cause this specific code, but itâ€™s always a good idea to ensure your vehicleâ€™s electrical system is functioning properly.