This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP
P0660: P0660: Engine Control Module (ECM) Output Circuit Malfunction
on 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 P0660 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?
Symptoms
- • Engine performance issues
- • rough idling
- • decreased fuel efficiency
- • and potentially a check engine light.
Common Causes
- • Faulty ECM output circuit
- • damaged or corroded wiring
- • or a malfunctioning ECM.
How to Fix P0660 on 2020 Chevrolet SILVERADO 1500 PICKUP
1. Check the wiring and connectors for damage or corrosion and repair or replace as needed. 2. Test the ECM output circuit using a multimeter to ensure it's functioning properly. 3. If the issue persists, replace the ECM.
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Read & clear codes on your 2020 Chevrolet SILVERADO 1500 PICKUP
Shop Scanners ↗Related Diagnostic Codes
Other codes that may appear with P0660
P0658: Malfunction of the Engine Control Module (ECM) Output Circuit
P0659: Malfunction of the Engine Control Module (ECM) Output Circuit
P0661: Engine Control Module (ECM) Output Circuit Malfunction
P0662: Engine Control Module (ECM) Output Circuit Malfunction
💡 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