AutoCodes – Chevrolet – P0274 2016 Chevrolet Silverado

P0274 2016 Chevrolet Silverado Code - Cylinder 5 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 5, Faulty Fuel Injector 5, Plugged Fuel Injector 5. 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: P0274 2016 Chevrolet Silverado indicates Cylinder 5 Injector Control Circuit High Voltage.
Common causes: Common causes include Dirty Fuel Injector 5, Faulty Fuel Injector 5, Plugged Fuel Injector 5.
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.

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Code Popularity 192

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
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Code P0274 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 P0274 2016 Chevrolet Silverado - Cylinder 5 Injector Control Circuit High Voltage - AutoCodes.com — P0274 2016 Chevrolet Silverado Code - Cylinder 5 Injector Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0274 2016 Chevrolet Silverado?

Dirty Fuel Injector 5
Faulty Fuel Injector 5
Plugged Fuel Injector 5
Fuel injector 5 harness is open or shorted
Fuel injector 5 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0274 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 P0274 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 P0274 2016 Chevrolet Silverado code?

Need more information on how to fix the P0274 2016 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P0274 2016 Chevrolet Silverado Code

What does the OBDII code P0274 mean for a 2016 Chevrolet Silverado?

P0274 indicates that the Cylinder 5 Injector Control Circuit is experiencing high voltage, which can affect fuel delivery and engine performance.

What are common symptoms of P0274 in a 2016 Chevrolet Silverado?

Symptoms include rough idling, reduced fuel efficiency, engine misfires, hesitation during acceleration, and possible activation of the check engine light.

What causes a P0274 code on a 2016 Chevrolet Silverado?

Common causes include a faulty fuel injector, damaged wiring or connections in the injector circuit, or issues with the engine control module (ECM).

Can I drive my 2016 Chevrolet Silverado with a P0274 code?

Driving with a P0274 code is not recommended, as it can lead to poor engine performance and potential damage to other components over time.

How can I diagnose the P0274 code on a 2016 Chevrolet Silverado?

Start by inspecting the wiring and connectors for Cylinder 5â€™s injector, test the injector for proper operation, and check the ECM for faults.

How do I fix the P0274 code on a 2016 Chevrolet Silverado?

Repair or replace any damaged wiring, connectors, or the Cylinder 5 fuel injector. If the ECM is faulty, it may require reprogramming or replacement.

What tools are needed to troubleshoot the P0274 code?

Youâ€™ll need an OBDII scanner, multimeter for testing wiring, and possibly specialized tools for replacing the fuel injector or diagnosing ECM issues.

How much does it cost to repair a P0274 code on a 2016 Chevrolet Silverado?

Costs vary but can range from $150 to $500 depending on whether youâ€™re repairing wiring, replacing an injector, or addressing ECM issues.

What happens if the P0274 code is ignored?

Ignoring the P0274 code can lead to worsening engine performance, increased emissions, and possible damage to other engine components.

Can a dirty fuel injector cause a P0274 code?

Yes, a dirty or clogged injector can lead to improper voltage readings and trigger a P0274 code. Cleaning or replacing the injector may resolve the issue.