← View Generic P0655 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0655: P0655: Engine Computer 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 P0655 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The Engine Control Module (ECM) has detected a malfunction in the computer output circuit, which may cause the engine to run rough or stall.
⚠️

Symptoms

  • • Rough engine idle
  • • stalling
  • • reduced engine performance
  • • check engine light illuminated
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Common Causes

  • • Faulty engine computer
  • • faulty wiring harness
  • • blown fuse
  • • faulty relay
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How to Fix P0655 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the wiring harness for damage or corrosion and repair as needed. 2. Check the fuses and relays for blown or faulty components and replace as needed. 3. If the issue persists, replace the engine computer.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Engine computer Shop ↗ Wiring harness Shop ↗ Fuses Shop ↗ Relays Shop ↗

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Related Diagnostic Codes

Other codes that may appear with P0655

P0653 Sequential Code

P0653: Engine Computer Output Circuit Malfunction

Medium
P0654 Sequential Code

P0654: Malfunction of the Engine Control Module (ECM) Output Circuit

Medium
P0656 Sequential Code

P0656: Malfunction of the Engine Control Module (ECM) Output Circuit

Medium
P0657 Sequential Code

P0657: 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