← View Generic P0146 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0146: P0146: Fuel Pressure Regulator Circuit Low Input

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$100 - $300
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 P0146 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The fuel pressure regulator circuit is not receiving the correct input signal, which can cause issues with fuel delivery and engine performance.
⚠️

Symptoms

  • • Poor engine performance
  • • rough idle
  • • decreased fuel efficiency
  • • and difficulty starting the engine
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Common Causes

  • • Faulty fuel pressure regulator
  • • clogged fuel filter
  • • low fuel pressure
  • • or a faulty fuel pump
🛠️

How to Fix P0146 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check fuel pressure and regulator circuit for proper function. 2. Replace fuel pressure regulator if faulty. 3. Clean or replace fuel filter if clogged. 4. Check fuel pump for proper function and replace if necessary.

🔧

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

Fuel Pressure Regulator Shop ↗ Fuel Filter Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2020 Chevrolet SILVERADO 1500 PICKUP

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Related Diagnostic Codes

Other codes that may appear with P0146

P0144 Sequential Code

P0144: Fuel Pressure Regulator Circuit Malfunction

Medium
P0145 Sequential Code

P0145: Fuel Pressure Regulator Circuit Malfunction

Medium
P0147 Sequential Code

P0147: Fuel Pressure Regulator Circuit Low Input

Medium
P0148 Sequential Code

P0148: Fuel Pressure Regulator 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