← View Generic P0622 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0622: P0622: Engine Control Module (ECM) Output Circuit Malfunction

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
⚠️

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 P0622 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The Engine Control Module (ECM) output circuit has malfunctioned, preventing the ECM from sending the correct signals to other engine components.
⚠️

Symptoms

  • • Engine performance issues
  • • rough idling
  • • decreased power
  • • and decreased fuel efficiency
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Common Causes

  • • Faulty ECM output circuit
  • • damaged wiring
  • • corrosion
  • • or loose connections
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How to Fix P0622 on 2020 Chevrolet SILVERADO 1500 PICKUP

Check the ECM output circuit for damage or corrosion Inspect and clean the wiring and connections Replace the ECM output circuit if damaged Clear any stored trouble codes and retest the vehicle

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

ECM output circuit Shop ↗ wiring harness Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with P0622

P0620 Sequential Code

P0620: Engine Control Module (ECM) Output Circuit Malfunction

Medium
P0621 Sequential Code

P0621: Engine Control Module (ECM) Output Circuit Malfunction

Medium
P0623 Sequential Code

P0623: Engine Control Module (ECM) Output Circuit Malfunction

Medium
P0624 Sequential Code

P0624: Engine Control Module (ECM) Output Circuit Malfunction

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