AutoCodes – Chevrolet – P0274 2015 Chevrolet Silverado

P0274 2015 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 2015 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 249

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 2015 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 2015 Chevrolet Silverado - Cylinder 5 Injector Control Circuit High Voltage - AutoCodes.com — P0274 2015 Chevrolet Silverado Code - Cylinder 5 Injector Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0274 2015 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 2015 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 2015 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 2015 Chevrolet Silverado code?

Need more information on how to fix the P0274 2015 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 2015 Chevrolet Silverado Code

What does the OBDII code P0274 mean for a 2015 Chevrolet Silverado?

P0274 indicates that the Engine Control Module (ECM) has detected a high voltage condition in the Cylinder 5 fuel injector control circuit.

What are the common symptoms of code P0274 in a 2015 Chevrolet Silverado?

Symptoms include rough idling, misfires, poor fuel economy, reduced engine performance, or the Check Engine Light being illuminated.

What causes the P0274 code to appear in a 2015 Chevrolet Silverado?

Possible causes include a faulty fuel injector, damaged wiring or connectors in the injector circuit, a short to voltage, or a malfunctioning ECM.

How can I diagnose the P0274 code on my 2015 Chevrolet Silverado?

Check the wiring and connectors for damage or corrosion, use a multimeter to test the injector circuit for proper voltage, and inspect the injector for potential faults.

Can I drive my 2015 Chevrolet Silverado with the P0274 code active?

Driving with this code is not recommended, as it can lead to poor performance, potential engine damage, and increased emissions.

How do I fix the P0274 code on a 2015 Chevrolet Silverado?

Repairs may include replacing the faulty injector, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming or replacing the ECM if necessary.

How much does it cost to fix the P0274 code on a 2015 Chevrolet Silverado?

Repair costs vary but may range from $150 to $500 or more, depending on whether the injector or ECM needs replacement and the labor involved.

What tools are needed to diagnose the P0274 code on a 2015 Chevrolet Silverado?

Common tools include an OBDII scanner, a multimeter, and possibly a wiring diagram for the injector circuit.

Can a dirty fuel injector cause the P0274 code?

A dirty injector is unlikely to cause this specific code, but an electrical issue with the injector or its circuit is a more probable cause.

Will clearing the P0274 code fix the issue on a 2015 Chevrolet Silverado?

Clearing the code without addressing the root cause will not fix the issue, and the code is likely to return. Proper diagnosis and repair are necessary.