← View Generic P0404 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0404: Exhaust Gas Recirculation Circuit Range/Performance

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$50 - $350
Parts & Labor
Difficulty
3/5
1-3 hours
DIY Possible?
✅ Yes
Save money
Your Vehicle
2020 Chevrolet
SILVERADO 1500 PICKUP
⚠️

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 P0404 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The EGR valve position does not match what the engine control module expects based on operating conditions.
⚠️

Symptoms

  • • Rough idle
  • • poor performance
  • • failed emissions test
  • • check engine light
  • • hesitation during acceleration.
🔍

Common Causes

  • • Faulty EGR valve position sensor
  • • carbon buildup on EGR valve
  • • wiring issues to EGR system
  • • mechanical problems with EGR valve.
🛠️

How to Fix P0404 on 2020 Chevrolet SILVERADO 1500 PICKUP

Replace EGR valve position sensor, clean EGR valve and passages, repair wiring, replace EGR valve if mechanically faulty.

🔧

Need Maintenance Info for Your SILVERADO 1500 PICKUP?

Get oil capacity, filter specs, and torque settings for your specific 2020 Chevrolet SILVERADO 1500 PICKUP.

View 2020 Chevrolet SILVERADO 1500 PICKUP Specs

Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

EGR Valve Shop ↗ EVAP Canister Shop ↗ Purge Valve Shop ↗ Vacuum Lines Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2020 Chevrolet SILVERADO 1500 PICKUP

Shop Scanners ↗
🔗

Related Diagnostic Codes

Other codes that may appear with P0404

P0402 Sequential Code

Exhaust Gas Recirculation Flow Excessive Detected

Medium
P0403 Sequential Code

P0403: Emissions Control System Not Operating Within Normal Parameters

Medium
P0405 Sequential Code

P0405: Emissions Control System Not Operating Within Normal Parameters

Medium
P0406 Sequential Code

P0406: Emissions Control System Not Operating Within Normal Parameters

Medium

💡 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