AutoCodes – GMC – P0273 2017 GMC Sierra

P0273 2017 GMC Sierra Code - Cylinder 5 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 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
P0273 2017 GMC Sierra indicates Cylinder 5 Injector Control Circuit Low 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 260
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 23, 2024
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Code P0273 2017 GMC Sierra 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 ground for greater than 2 s.
OBDII Code P0273 2017 GMC Sierra - Cylinder 5 Injector Control Circuit Low Voltage - AutoCodes.com
P0273 2017 GMC Sierra Code - Cylinder 5 Injector Control Circuit Low Voltage

What are the Possible Causes of the DTC P0273 2017 GMC Sierra?

  • 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 P0273 2017 GMC Sierra?

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 P0273 2017 GMC Sierra 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 P0273 2017 GMC Sierra 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 P0273 2017 GMC Sierra Code

1. What does the OBDII code P0273 mean on a 2017 GMC Sierra?

P0273 indicates a Cylinder 5 Injector Control Circuit Low Voltage, meaning the engine control module (ECM) detects an issue with the electrical signal to the injector for cylinder 5.

2. What are the common symptoms of code P0273 in a 2017 GMC Sierra?

Symptoms may include rough idling, misfires, poor acceleration, decreased fuel efficiency, and the check engine light being illuminated.

3. What causes code P0273 on a 2017 GMC Sierra?

Common causes include faulty fuel injector for cylinder 5, damaged wiring or connectors in the injector circuit, a malfunctioning ECM, or poor electrical connections.

4. Can I drive my 2017 GMC Sierra with code P0273?

While the vehicle may still be drivable, driving with this code can lead to engine performance issues and potential damage. It's best to address the issue promptly.

5. How can I diagnose code P0273 on a 2017 GMC Sierra?

Diagnosis typically involves inspecting the injector wiring and connectors for damage, testing the injector for proper function, and checking the ECM for faults.

6. How do I fix the P0273 code on my 2017 GMC Sierra?

Repairs may include replacing the cylinder 5 fuel injector, repairing or replacing damaged wiring, cleaning corroded connectors, or reprogramming or replacing the ECM.

7. How much does it cost to fix code P0273 on a 2017 GMC Sierra?

The repair cost can vary, ranging from $150 to $500 or more, depending on whether the issue is with the injector, wiring, or ECM.

8. Can a bad fuel injector cause code P0273 in a 2017 GMC Sierra?

Yes, a faulty or clogged fuel injector in cylinder 5 is a common cause of this code.

9. How do I prevent code P0273 from occurring again in my 2017 GMC Sierra?

Regular maintenance, including inspecting and cleaning injectors, checking wiring connections, and using quality fuel, can help prevent this issue.

10. Is P0273 a serious issue for my 2017 GMC Sierra?

Yes, it's important to address P0273 promptly, as it can lead to poor engine performance and potential long-term damage if left unresolved.

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