← View Generic P0412 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0412: Secondary Air Injection System Switching Valve A Circuit Malfunction

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 P0412 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The switching valve that controls secondary air injection flow has an electrical malfunction.
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Symptoms

  • • Failed emissions test
  • • check engine light
  • • poor cold start emissions performance.
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Common Causes

  • • Faulty air injection switching valve
  • • wiring problems to valve
  • • poor electrical connections
  • • valve stuck open or closed.
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How to Fix P0412 on 2020 Chevrolet SILVERADO 1500 PICKUP

Replace air injection switching valve, repair wiring to valve, clean electrical connections, test valve operation.

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Need Maintenance Info for Your SILVERADO 1500 PICKUP?

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

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

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Related Diagnostic Codes

Other codes that may appear with P0412

P0410 Sequential Code

P0410: Emissions Control System Not Operating Within Normal Parameters

Medium
P0411 Sequential Code

Secondary Air Injection System Incorrect Flow Detected

Medium
P0413 Sequential Code

Secondary Air Injection System Switching Valve A Circuit Open

Medium
P0414 Sequential Code

Secondary Air Injection System Switching Valve A Circuit Shorted

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