AutoCodes – Chevrolet – P0273 2018 Chevrolet Silverado

P0273 2018 Chevrolet Silverado 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 2018 Chevrolet Silverado 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.

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Code Popularity 376

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 P0273 2018 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 ground for greater than 2 s.

OBDII Code P0273 2018 Chevrolet Silverado - Cylinder 5 Injector Control Circuit Low Voltage - AutoCodes.com — P0273 2018 Chevrolet Silverado Code - Cylinder 5 Injector Control Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0273 2018 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 P0273 2018 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 P0273 2018 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 P0273 2018 Chevrolet Silverado code?

Need more information on how to fix the P0273 2018 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 P0273 2018 Chevrolet Silverado Code

1. What are common symptoms of OBDII code P0273 in a 2018 Chevrolet Silverado?

- Common symptoms include engine misfires, rough idling, loss of power, and potentially decreased fuel efficiency.

2. What does the OBDII code P0273 indicate in a 2018 Chevrolet Silverado?

- OBDII code P0273 indicates a low voltage condition in the control circuit of the injector for cylinder 5 in the engine.

3. What are possible causes of the Cylinder 5 Injector Control Circuit Low Voltage code in a 2018 Chevrolet Silverado?

- Possible causes include a faulty fuel injector, damaged wiring or connectors, a malfunctioning Engine Control Module (ECM), or issues with the injector driver circuit.

4. How can I diagnose the cause of OBDII code P0273 in my 2018 Chevrolet Silverado?

- Diagnostic steps may include checking the injector wiring and connector for damage, testing the injector resistance, and verifying the ECM's functionality.

5. Can driving with OBDII code P0273 in a 2018 Chevrolet Silverado cause further damage?

- Continuing to drive with this code may lead to increased engine wear, decreased performance, and potential damage to other engine components over time.

6. How can I repair OBDII code P0273 in a 2018 Chevrolet Silverado?

- Repair options may involve replacing the faulty fuel injector, repairing damaged wiring or connectors, resetting the ECM, or seeking professional help for advanced diagnostics.

7. Is it safe to continue driving my 2018 Chevrolet Silverado with OBDII code P0273?

- It is not recommended to drive the vehicle with this code active, as it can lead to engine performance issues and potential long-term damage if left unresolved.

8. Can a DIY enthusiast fix OBDII code P0273 in a 2018 Chevrolet Silverado?

- Depending on their skill level and access to tools, a DIY enthusiast may be able to address simpler causes like checking wiring connections, but more complex issues may require professional assistance.

9. How much does it typically cost to repair OBDII code P0273 in a 2018 Chevrolet Silverado?

- The cost of repair can vary widely depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Will resetting the OBDII system clear the P0273 code in my 2018 Chevrolet Silverado?

- Resetting the system may temporarily clear the code, but if the underlying issue causing the low voltage condition is not addressed, the code is likely to reappear.