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Engine-Codes – Chevrolet – P0273 2018 Chevrolet Silverado

P0273 2018 Chevrolet Silverado Code - Cylinder 5 Injector Control Circuit Low Voltage

Quick Answer

The P0273 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates an issue with the Cylinder 5 Injector Control Circuit having low voltage. Common causes include Faulty fuel injector in Cylinder 5, Damaged or corroded wiring harness connected to the fuel injector, Poor electrical connection in the injector control circuit. 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 Faulty fuel injector in Cylinder 5, Damaged or corroded wiring harness connected to the fuel injector, Poor electrical connection in the injector control circuit.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 18, 2024
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Code P0273 2018 Chevrolet Silverado Description

The P0273 diagnostic trouble code (DTC) for a 2018 Chevrolet Silverado indicates an issue with the Cylinder 5 Injector Control Circuit having low voltage. In a fuel-injected engine like the one in the Silverado, each cylinder has its own fuel injector responsible for delivering the precise amount of fuel needed for combustion. The injector control circuit is a crucial component that regulates the operation of the fuel injector in Cylinder 5.

OBDII Code P0273 2018 Chevrolet Silverado - Cylinder 5 Injector Control Circuit Low Voltage
P0273 2018 Chevrolet Silverado Code - Cylinder 5 Injector Control Circuit Low Voltage

Common Causes of P0273 2018 Chevrolet Silverado

  1. Faulty fuel injector in Cylinder 5
  2. Damaged or corroded wiring harness connected to the fuel injector
  3. Poor electrical connection in the injector control circuit
  4. Issues with the Engine Control Module (ECM)

Symptoms of P0273 2018 Chevrolet Silverado

  1. Rough idling or engine misfires
  2. Decreased engine performance
  3. Engine stalling
  4. Check Engine Light illuminated on the dashboard

How to Fix P0273 2018 Chevrolet Silverado

  1. Begin by conducting a thorough visual inspection of the wiring harness and connections related to the fuel injector in Cylinder 5.
  2. Use a multimeter to test the voltage in the injector control circuit to determine if it is indeed low.
  3. If the voltage is low, check the fuel injector itself for any signs of damage or malfunction.
  4. Replace the faulty fuel injector if necessary, ensuring proper installation and connection.
  5. Clear the DTC from the vehicle's ECM using a diagnostic scanner and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0273 2018 Chevrolet Silverado

The typical repair costs for addressing a Cylinder 5 Injector Control Circuit Low Voltage issue in a 2018 Chevrolet Silverado can range from $200 to $500, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, with rates potentially higher in metropolitan areas or at dealerships, and lower at independent shops. It's recommended to check local rates for a more accurate estimate.

What does this mean?

Tech Notes for P0273 2018 Chevrolet Silverado

A clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector.

Need more information about the P0273 2018 Chevrolet Silverado 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 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.

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