← View Generic P0043 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0043: P0043: Fuel Pressure Regulator Control Circuit Low

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 P0043 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The fuel pressure regulator control circuit is malfunctioning, causing the fuel pressure to be too low. This can lead to poor engine performance, decreased fuel efficiency, and potentially cause the engine to stall.
⚠️

Symptoms

  • • Poor engine performance
  • • decreased fuel efficiency
  • • engine stalling
  • • rough idling
  • • decreased power
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Common Causes

  • • Faulty fuel pressure regulator
  • • clogged fuel filter
  • • faulty fuel pump
  • • vacuum leaks
  • • faulty fuel pressure sensor
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How to Fix P0043 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check and replace the fuel filter if clogged. 2. Check and replace the fuel pressure regulator if faulty. 3. Check and replace the fuel pump if faulty. 4. Check for vacuum leaks and repair if necessary. 5. Check and replace the fuel pressure sensor if faulty.

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Need Maintenance Info for Your SILVERADO 1500 PICKUP?

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Fuel filter Shop ↗ Fuel pressure regulator Shop ↗ Fuel pump Shop ↗ Fuel pressure sensor Shop ↗

Essential Tool

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OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with P0043

P0041 Sequential Code

P0041: Fuel Pressure Regulator Circuit Malfunction

Medium
P0042 Sequential Code

P0042: Fuel Pressure Regulator Circuit Low Input

Medium
P0044 Sequential Code

P0044: Fuel Pressure Regulator Circuit Low Input

Medium
P0045 Sequential Code

P0045: Fuel Pressure Regulator Control Circuit Low Input

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