← View Generic P0454 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0454: P0454: Evaporative Emission Control System Leak Detected

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$100 - $500
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
Your Vehicle
2020 Chevrolet
SILVERADO 1500 PICKUP
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Important for 2020 Chevrolet SILVERADO 1500 PICKUP Owners

Before starting repairs, verify which engine your 2020 Chevrolet SILVERADO 1500 PICKUP has. Check your VIN or engine code to ensure you order the correct parts.

📖 What Does P0454 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The engine control module (ECM) has detected a leak in the evaporative emission control system, which is responsible for capturing and storing fuel vapors and preventing them from being released into the atmosphere.
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Symptoms

  • • Fuel odor
  • • rough engine idle
  • • decreased fuel efficiency
  • • check engine light illuminated
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Common Causes

  • • Leak in the fuel tank
  • • fuel tank vent hose
  • • fuel tank pressure sensor hose
  • • or fuel tank cap
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How to Fix P0454 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Inspect the fuel tank, fuel tank vent hose, and fuel tank pressure sensor hose for signs of damage or wear. 2. Check the fuel tank cap for proper sealing. 3. Use a leak-down test kit to detect the source of the leak. 4. Repair or replace the damaged component.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Fuel tank vent hose Shop ↗ Fuel tank pressure sensor hose Shop ↗ Fuel tank cap Shop ↗

Essential Tool

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OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with P0454

P0452 Sequential Code

Evaporative Emission Control System Pressure Sensor Low Input

Medium
P0453 Sequential Code

Evaporative Emission Control System Pressure Sensor High Input

Medium
P0455 Sequential Code

EVAP System Leak Detected Large Leak

Medium
P0456 Sequential Code

EVAP System Leak Detected Very Small Leak

Low

💡 Why These Codes Are Related:

  • • Similar Issues: Same root cause or component failure
  • • Related Problems: Often occur together due to system interactions
  • • Sequential Codes: Progressive failure stages or multiple sensors
  • • Same System: Components within the same automotive system