AutoCodes – Chevrolet – P0271 2017 Chevrolet Silverado

P0271 2017 Chevrolet Silverado Code - Cylinder 4 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 4, Faulty Fuel Injector 4, Plugged Fuel Injector 4. 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: P0271 2017 Chevrolet Silverado indicates Cylinder 4 Injector Control Circuit High Voltage.
Common causes: Common causes include Dirty Fuel Injector 4, Faulty Fuel Injector 4, Plugged Fuel Injector 4.
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 236

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 P0271 2017 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 P0271 2017 Chevrolet Silverado - Cylinder 4 Injector Control Circuit High Voltage - AutoCodes.com — P0271 2017 Chevrolet Silverado Code - Cylinder 4 Injector Control Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC P0271 2017 Chevrolet Silverado?

Dirty Fuel Injector 4
Faulty Fuel Injector 4
Plugged Fuel Injector 4
Fuel Injector #4 harness is open or shorted
Fuel Injector #4 circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0271 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.

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 P0271 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.

Need more information about the P0271 2017 Chevrolet Silverado code?

Need more information on how to fix the P0271 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P0271 2017 Chevrolet Silverado Code

What does the OBDII code P0271 mean for a 2017 Chevrolet Silverado?

The OBDII code P0271 indicates a high voltage condition in the injector control circuit for cylinder 4, which can affect the fuel delivery to that cylinder.

What are the common symptoms of the P0271 code?

Common symptoms include engine misfires, poor acceleration, rough idle, decreased fuel efficiency, and illumination of the check engine light.

What could cause the P0271 code to trigger?

Potential causes include a faulty fuel injector, damaged wiring or connectors in the injector circuit, a malfunctioning engine control module (ECM), or an issue with the fuel delivery system.

How can I diagnose the P0271 code?

To diagnose the P0271 code, check for other related codes, inspect the wiring and connectors for damage, test the fuel injector for proper operation, and measure voltage and resistance in the injector circuit.

What are some common repairs for the P0271 code?

Common repairs include replacing the faulty fuel injector, repairing or replacing damaged wiring or connectors, and reprogramming or replacing the ECM if itâ€™s found to be defective.

Can I drive my Silverado with the P0271 code?

While you may be able to drive the vehicle, it is not recommended due to potential engine misfires and reduced performance, which can lead to further damage.

How much does it typically cost to fix the P0271 code?

Repair costs can vary widely, but they often range from $100 to $800 depending on whether you need to replace an injector, repair wiring, or replace the ECM.

Is the P0271 code serious?

Yes, the P0271 code can indicate a significant issue with the fuel delivery to cylinder 4, which can lead to engine performance problems and potential engine damage if not addressed.

Can I reset the check engine light after fixing the P0271 code?

Yes, after making the necessary repairs, you can reset the check engine light using an OBDII scanner. However, if the issue is not resolved, the code may reappear.