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Engine-Codes – Chevrolet – P054F 2018 Chevrolet Silverado

P054F 2018 Chevrolet Silverado Code - Idle Control Fuel Quantity Higher Than Expected

Quick Answer

The P054F diagnostic trouble code (DTC) indicates that the engine control module (ECM) has detected an abnormality in the fuel quantity being injected during idle conditions. Common causes include Malfunctioning fuel injectors that may be leaking or delivering excessive fuel, Faulty mass airflow sensor (MAF) providing incorrect airflow readings, Issues with the throttle body, such as carbon buildup or mechanical failure. 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
P054F 2018 Chevrolet Silverado indicates Idle Control Fuel Quantity Higher Than Expected.
Common causes
Common causes include Malfunctioning fuel injectors that may be leaking or delivering excessive fuel, Faulty mass airflow sensor (MAF) providing incorrect airflow readings, Issues with the throttle body, such as carbon buildup or mechanical failure.
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 Oct 18, 2024
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Code P054F 2018 Chevrolet Silverado Description

The P054F diagnostic trouble code (DTC) indicates that the engine control module (ECM) has detected an abnormality in the fuel quantity being injected during idle conditions. Specifically, this code suggests that the fuel quantity is higher than what is expected for the current operating conditions. This can lead to a variety of performance issues, including rough idling, increased fuel consumption, and potential engine stalling.

OBDII Code P054F 2018 Chevrolet Silverado - Idle Control Fuel Quantity Higher Than Expected
P054F 2018 Chevrolet Silverado Code - Idle Control Fuel Quantity Higher Than Expected

Common Causes of P054F 2018 Chevrolet Silverado

  1. Malfunctioning fuel injectors that may be leaking or delivering excessive fuel.
  2. Faulty mass airflow sensor (MAF) providing incorrect airflow readings.
  3. Issues with the throttle body, such as carbon buildup or mechanical failure.
  4. Vacuum leaks in the intake system affecting air-fuel mixture.
  5. Faulty engine coolant temperature sensor (ECT) leading to incorrect fuel calculations.

Symptoms of P054F 2018 Chevrolet Silverado

  1. Rough idling or unstable engine performance at idle.
  2. Increased fuel consumption and reduced fuel efficiency.
  3. Engine stalling or difficulty starting.
  4. Check Engine Light (CEL) illuminated on the dashboard.
  5. Possible black smoke from the exhaust, indicating rich fuel mixture.

How to Fix P054F 2018 Chevrolet Silverado

  1. Diagnostic Scan: Begin by using an OBD-II scanner to confirm the P054F code and check for any related codes that might provide additional context.
  2. Visual Inspection: Conduct a thorough visual inspection of the fuel injectors, MAF sensor, throttle body, and intake system for signs of damage or wear.
  3. Sensor Testing: Test the MAF and ECT sensors for proper operation, ensuring they are providing accurate readings to the ECM.
  4. Fuel Injector Service: If fuel injectors are suspected, perform a cleaning or replacement as necessary to ensure they are functioning correctly.
  5. Clear Codes and Test Drive: After repairs, clear the diagnostic codes and take the vehicle for a test drive to ensure that the issue has been resolved and that the P054F code does not reappear.

Cost to Fix P054F 2018 Chevrolet Silverado

The cost to diagnose and repair the P054F code can vary widely based on the specific issue identified. Typical repair costs may range from $150 to $600, depending on whether the problem is a simple sensor replacement or a more complex fuel system repair. Labor rates at auto repair shops generally range from $80 to $150 per hour, with metropolitan areas and dealerships often charging higher rates. Independent shops may offer lower rates. It is advisable to consult local repair shops for a more precise estimate based on your vehicle's specific needs and the local labor market.

What does this mean?

Tech Notes for P054F 2018 Chevrolet Silverado

Contaminated or improper fuel quality may cause this DTC to set.

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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.

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